./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:03,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:03,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:03,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:03,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:03,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:03,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:03,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:03,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:03,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:03,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:03,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:03,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:03,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:03,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:03,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:03,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:03,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:03,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:03,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:03,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:03,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:03,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:03,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:03,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:03,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:03,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:03,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:03,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:03,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:03,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:03,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:03,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:03,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:03,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:03,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:03,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:03,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:03,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:03,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:03,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:03,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 01:45:03,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:03,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:03,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:03,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:03,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:03,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:03,344 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:03,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:03,344 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:03,344 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:45:03,345 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:03,346 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:03,346 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:45:03,346 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:45:03,346 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:03,347 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:45:03,347 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:45:03,347 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:45:03,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 01:45:03,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 01:45:03,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:03,349 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:45:03,349 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:45:03,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:45:03,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:45:03,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:03,350 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 01:45:03,350 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 01:45:03,351 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 01:45:03,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:03,351 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:45:03,352 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:45:03,352 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:03,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:03,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:03,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:03,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:03,353 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:45:03,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:03,354 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:45:03,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:45:03,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:03,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2022-11-03 01:45:03,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:03,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:03,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:03,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:03,686 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:03,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-11-03 01:45:03,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/92bdb4684/3ad440a794604e788fcd6518177cd571/FLAGb547c1b13 [2022-11-03 01:45:04,363 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:04,364 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-11-03 01:45:04,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/92bdb4684/3ad440a794604e788fcd6518177cd571/FLAGb547c1b13 [2022-11-03 01:45:04,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/92bdb4684/3ad440a794604e788fcd6518177cd571 [2022-11-03 01:45:04,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:04,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:04,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:04,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:04,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:04,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:04" (1/1) ... [2022-11-03 01:45:04,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301483db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:04, skipping insertion in model container [2022-11-03 01:45:04,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:04" (1/1) ... [2022-11-03 01:45:04,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:04,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:04,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-11-03 01:45:05,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:05,164 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:05,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-11-03 01:45:05,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:05,284 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:05,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05 WrapperNode [2022-11-03 01:45:05,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:05,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:05,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:05,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:05,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,388 INFO L138 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1583 [2022-11-03 01:45:05,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:05,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:05,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:05,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:05,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:05,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:05,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:05,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:05,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (1/1) ... [2022-11-03 01:45:05,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:05,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:05,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:05,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-11-03 01:45:05,652 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-11-03 01:45:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-11-03 01:45:05,653 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-11-03 01:45:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-03 01:45:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-03 01:45:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-11-03 01:45:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-11-03 01:45:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-11-03 01:45:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-11-03 01:45:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-03 01:45:05,655 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-03 01:45:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-11-03 01:45:05,655 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-11-03 01:45:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-11-03 01:45:05,656 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-11-03 01:45:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-11-03 01:45:05,656 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-11-03 01:45:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-03 01:45:05,656 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-03 01:45:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:45:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-03 01:45:05,657 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-03 01:45:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-11-03 01:45:05,658 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-11-03 01:45:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:05,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-11-03 01:45:05,660 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-11-03 01:45:05,960 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:05,963 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:45:06,166 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,237 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-11-03 01:45:06,240 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-11-03 01:45:06,350 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,380 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-11-03 01:45:06,380 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-11-03 01:45:06,387 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,388 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,400 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,418 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,436 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,438 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:06,446 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:07,114 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0; [2022-11-03 01:45:07,115 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2022-11-03 01:45:07,115 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2022-11-03 01:45:07,115 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2022-11-03 01:45:07,115 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2022-11-03 01:45:07,116 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2022-11-03 01:45:07,116 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2022-11-03 01:45:07,116 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2022-11-03 01:45:07,116 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2022-11-03 01:45:07,116 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2022-11-03 01:45:07,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2022-11-03 01:45:07,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-11-03 01:45:07,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-11-03 01:45:07,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2022-11-03 01:45:07,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2022-11-03 01:45:07,153 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:45:07,460 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:45:07,460 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:45:07,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:07 BoogieIcfgContainer [2022-11-03 01:45:07,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:45:07,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:45:07,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:45:07,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:45:07,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:04" (1/3) ... [2022-11-03 01:45:07,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccf2761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:07, skipping insertion in model container [2022-11-03 01:45:07,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:05" (2/3) ... [2022-11-03 01:45:07,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccf2761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:07, skipping insertion in model container [2022-11-03 01:45:07,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:07" (3/3) ... [2022-11-03 01:45:07,476 INFO L112 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2022-11-03 01:45:07,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:45:07,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 01:45:07,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:45:07,556 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f0b6e6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:45:07,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 01:45:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 268 states have internal predecessors, (378), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-03 01:45:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:45:07,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:07,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:45:07,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:07,575 INFO L85 PathProgramCache]: Analyzing trace with hash 49791412, now seen corresponding path program 1 times [2022-11-03 01:45:07,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:07,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258168863] [2022-11-03 01:45:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:07,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:07,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:07,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258168863] [2022-11-03 01:45:07,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258168863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:07,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:07,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605363036] [2022-11-03 01:45:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:07,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:07,831 INFO L87 Difference]: Start difference. First operand has 351 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 268 states have internal predecessors, (378), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:08,111 INFO L93 Difference]: Finished difference Result 354 states and 536 transitions. [2022-11-03 01:45:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 01:45:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:08,126 INFO L225 Difference]: With dead ends: 354 [2022-11-03 01:45:08,126 INFO L226 Difference]: Without dead ends: 352 [2022-11-03 01:45:08,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:08,131 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 255 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:08,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 656 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-03 01:45:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 349. [2022-11-03 01:45:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 248 states have (on average 1.5080645161290323) internal successors, (374), 266 states have internal predecessors, (374), 87 states have call successors, (87), 13 states have call predecessors, (87), 12 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-03 01:45:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 532 transitions. [2022-11-03 01:45:08,207 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 532 transitions. Word has length 4 [2022-11-03 01:45:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:08,207 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 532 transitions. [2022-11-03 01:45:08,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:08,208 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 532 transitions. [2022-11-03 01:45:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:45:08,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:08,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:45:08,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:45:08,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash 279879072, now seen corresponding path program 1 times [2022-11-03 01:45:08,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:08,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449572233] [2022-11-03 01:45:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:08,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:08,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:08,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449572233] [2022-11-03 01:45:08,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449572233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:08,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:08,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:08,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759619635] [2022-11-03 01:45:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:08,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:08,291 INFO L87 Difference]: Start difference. First operand 349 states and 532 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:08,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:08,507 INFO L93 Difference]: Finished difference Result 460 states and 685 transitions. [2022-11-03 01:45:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:08,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:45:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:08,518 INFO L225 Difference]: With dead ends: 460 [2022-11-03 01:45:08,518 INFO L226 Difference]: Without dead ends: 460 [2022-11-03 01:45:08,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:08,525 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 516 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:08,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 622 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-03 01:45:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 444. [2022-11-03 01:45:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 327 states have (on average 1.4678899082568808) internal successors, (480), 335 states have internal predecessors, (480), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-11-03 01:45:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 668 transitions. [2022-11-03 01:45:08,591 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 668 transitions. Word has length 6 [2022-11-03 01:45:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:08,592 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 668 transitions. [2022-11-03 01:45:08,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 668 transitions. [2022-11-03 01:45:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:45:08,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:08,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:08,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:45:08,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:08,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:08,594 INFO L85 PathProgramCache]: Analyzing trace with hash 94210591, now seen corresponding path program 1 times [2022-11-03 01:45:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:08,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716243698] [2022-11-03 01:45:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:08,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:08,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:08,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716243698] [2022-11-03 01:45:08,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716243698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:08,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:08,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:45:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881584382] [2022-11-03 01:45:08,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:08,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:08,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:08,677 INFO L87 Difference]: Start difference. First operand 444 states and 668 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:08,964 INFO L93 Difference]: Finished difference Result 443 states and 667 transitions. [2022-11-03 01:45:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:08,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:45:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:08,970 INFO L225 Difference]: With dead ends: 443 [2022-11-03 01:45:08,970 INFO L226 Difference]: Without dead ends: 441 [2022-11-03 01:45:08,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:08,979 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 282 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:08,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 561 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-03 01:45:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-11-03 01:45:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 325 states have (on average 1.44) internal successors, (468), 332 states have internal predecessors, (468), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-11-03 01:45:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 656 transitions. [2022-11-03 01:45:09,033 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 656 transitions. Word has length 7 [2022-11-03 01:45:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:09,035 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 656 transitions. [2022-11-03 01:45:09,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 656 transitions. [2022-11-03 01:45:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:45:09,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:09,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:09,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:45:09,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash 463763928, now seen corresponding path program 1 times [2022-11-03 01:45:09,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:09,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626105585] [2022-11-03 01:45:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:09,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:09,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:09,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626105585] [2022-11-03 01:45:09,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626105585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:09,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:09,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:09,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063236517] [2022-11-03 01:45:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:09,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:09,092 INFO L87 Difference]: Start difference. First operand 441 states and 656 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:09,370 INFO L93 Difference]: Finished difference Result 550 states and 805 transitions. [2022-11-03 01:45:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:45:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:09,380 INFO L225 Difference]: With dead ends: 550 [2022-11-03 01:45:09,380 INFO L226 Difference]: Without dead ends: 550 [2022-11-03 01:45:09,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:09,391 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 352 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:09,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 627 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-03 01:45:09,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 547. [2022-11-03 01:45:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 409 states have (on average 1.41320293398533) internal successors, (578), 409 states have internal predecessors, (578), 105 states have call successors, (105), 31 states have call predecessors, (105), 32 states have return successors, (120), 110 states have call predecessors, (120), 94 states have call successors, (120) [2022-11-03 01:45:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 803 transitions. [2022-11-03 01:45:09,437 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 803 transitions. Word has length 9 [2022-11-03 01:45:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:09,438 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 803 transitions. [2022-11-03 01:45:09,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 803 transitions. [2022-11-03 01:45:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:45:09,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:09,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:09,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:45:09,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:09,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash 726524431, now seen corresponding path program 1 times [2022-11-03 01:45:09,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:09,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815791082] [2022-11-03 01:45:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:09,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:09,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:09,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815791082] [2022-11-03 01:45:09,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815791082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:09,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:09,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:09,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641546804] [2022-11-03 01:45:09,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:09,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:09,499 INFO L87 Difference]: Start difference. First operand 547 states and 803 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:09,667 INFO L93 Difference]: Finished difference Result 550 states and 805 transitions. [2022-11-03 01:45:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:45:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:09,671 INFO L225 Difference]: With dead ends: 550 [2022-11-03 01:45:09,671 INFO L226 Difference]: Without dead ends: 547 [2022-11-03 01:45:09,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:09,672 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 0 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:09,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 858 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:09,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-03 01:45:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2022-11-03 01:45:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 409 states have (on average 1.4107579462102688) internal successors, (577), 409 states have internal predecessors, (577), 105 states have call successors, (105), 31 states have call predecessors, (105), 32 states have return successors, (120), 110 states have call predecessors, (120), 94 states have call successors, (120) [2022-11-03 01:45:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 802 transitions. [2022-11-03 01:45:09,694 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 802 transitions. Word has length 11 [2022-11-03 01:45:09,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:09,694 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 802 transitions. [2022-11-03 01:45:09,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 802 transitions. [2022-11-03 01:45:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:45:09,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:09,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:09,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:45:09,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:09,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:09,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1955095559, now seen corresponding path program 1 times [2022-11-03 01:45:09,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:09,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181718151] [2022-11-03 01:45:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:09,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:09,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181718151] [2022-11-03 01:45:09,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181718151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:09,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:09,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:09,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177520844] [2022-11-03 01:45:09,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:09,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:09,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:09,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:09,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:09,799 INFO L87 Difference]: Start difference. First operand 547 states and 802 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:09,958 INFO L93 Difference]: Finished difference Result 604 states and 867 transitions. [2022-11-03 01:45:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:45:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:09,962 INFO L225 Difference]: With dead ends: 604 [2022-11-03 01:45:09,963 INFO L226 Difference]: Without dead ends: 604 [2022-11-03 01:45:09,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:09,966 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 439 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:09,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 555 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-03 01:45:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 578. [2022-11-03 01:45:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 435 states have (on average 1.4114942528735632) internal successors, (614), 437 states have internal predecessors, (614), 104 states have call successors, (104), 35 states have call predecessors, (104), 38 states have return successors, (120), 105 states have call predecessors, (120), 96 states have call successors, (120) [2022-11-03 01:45:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 838 transitions. [2022-11-03 01:45:09,992 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 838 transitions. Word has length 12 [2022-11-03 01:45:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:09,994 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 838 transitions. [2022-11-03 01:45:09,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 838 transitions. [2022-11-03 01:45:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:10,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:10,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:10,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:45:10,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1626709586, now seen corresponding path program 1 times [2022-11-03 01:45:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:10,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887086181] [2022-11-03 01:45:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:10,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:10,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887086181] [2022-11-03 01:45:10,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887086181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:10,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:10,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61968587] [2022-11-03 01:45:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:10,043 INFO L87 Difference]: Start difference. First operand 578 states and 838 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:10,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:10,377 INFO L93 Difference]: Finished difference Result 892 states and 1331 transitions. [2022-11-03 01:45:10,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:10,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:45:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:10,382 INFO L225 Difference]: With dead ends: 892 [2022-11-03 01:45:10,382 INFO L226 Difference]: Without dead ends: 892 [2022-11-03 01:45:10,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:10,383 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 229 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:10,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1018 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-03 01:45:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 746. [2022-11-03 01:45:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 567 states have (on average 1.4109347442680775) internal successors, (800), 569 states have internal predecessors, (800), 125 states have call successors, (125), 51 states have call predecessors, (125), 53 states have return successors, (206), 125 states have call predecessors, (206), 117 states have call successors, (206) [2022-11-03 01:45:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1131 transitions. [2022-11-03 01:45:10,417 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1131 transitions. Word has length 15 [2022-11-03 01:45:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:10,417 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1131 transitions. [2022-11-03 01:45:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1131 transitions. [2022-11-03 01:45:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:45:10,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:10,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:10,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:45:10,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1350163222, now seen corresponding path program 1 times [2022-11-03 01:45:10,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:10,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152871346] [2022-11-03 01:45:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:10,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:10,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:10,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152871346] [2022-11-03 01:45:10,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152871346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:10,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:10,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:10,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945256922] [2022-11-03 01:45:10,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:10,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:10,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:10,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:10,545 INFO L87 Difference]: Start difference. First operand 746 states and 1131 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:11,085 INFO L93 Difference]: Finished difference Result 737 states and 1110 transitions. [2022-11-03 01:45:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 01:45:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:11,090 INFO L225 Difference]: With dead ends: 737 [2022-11-03 01:45:11,090 INFO L226 Difference]: Without dead ends: 737 [2022-11-03 01:45:11,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:11,091 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 658 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:11,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 486 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:45:11,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-03 01:45:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 728. [2022-11-03 01:45:11,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 552 states have (on average 1.4003623188405796) internal successors, (773), 554 states have internal predecessors, (773), 122 states have call successors, (122), 48 states have call predecessors, (122), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2022-11-03 01:45:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1095 transitions. [2022-11-03 01:45:11,118 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1095 transitions. Word has length 16 [2022-11-03 01:45:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:11,119 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1095 transitions. [2022-11-03 01:45:11,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1095 transitions. [2022-11-03 01:45:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:11,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:11,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:11,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:45:11,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2060069580, now seen corresponding path program 1 times [2022-11-03 01:45:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240343281] [2022-11-03 01:45:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:11,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:11,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240343281] [2022-11-03 01:45:11,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240343281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:11,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:11,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:11,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764742054] [2022-11-03 01:45:11,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:11,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:11,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:11,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:11,153 INFO L87 Difference]: Start difference. First operand 728 states and 1095 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:11,333 INFO L93 Difference]: Finished difference Result 727 states and 1092 transitions. [2022-11-03 01:45:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:11,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:45:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:11,337 INFO L225 Difference]: With dead ends: 727 [2022-11-03 01:45:11,337 INFO L226 Difference]: Without dead ends: 727 [2022-11-03 01:45:11,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:11,340 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 7 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:11,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 801 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-03 01:45:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2022-11-03 01:45:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 552 states have (on average 1.3967391304347827) internal successors, (771), 553 states have internal predecessors, (771), 121 states have call successors, (121), 48 states have call predecessors, (121), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2022-11-03 01:45:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1092 transitions. [2022-11-03 01:45:11,369 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1092 transitions. Word has length 15 [2022-11-03 01:45:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:11,373 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1092 transitions. [2022-11-03 01:45:11,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1092 transitions. [2022-11-03 01:45:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 01:45:11,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:11,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:11,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:45:11,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -642074245, now seen corresponding path program 1 times [2022-11-03 01:45:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687681801] [2022-11-03 01:45:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:11,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:11,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687681801] [2022-11-03 01:45:11,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687681801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:11,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:11,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:11,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636817086] [2022-11-03 01:45:11,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:11,459 INFO L87 Difference]: Start difference. First operand 727 states and 1092 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:11,917 INFO L93 Difference]: Finished difference Result 745 states and 1113 transitions. [2022-11-03 01:45:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-03 01:45:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:11,922 INFO L225 Difference]: With dead ends: 745 [2022-11-03 01:45:11,922 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 01:45:11,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:11,923 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 502 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:11,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 660 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 01:45:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 727. [2022-11-03 01:45:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 552 states have (on average 1.3931159420289856) internal successors, (769), 553 states have internal predecessors, (769), 121 states have call successors, (121), 48 states have call predecessors, (121), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2022-11-03 01:45:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1090 transitions. [2022-11-03 01:45:11,959 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1090 transitions. Word has length 22 [2022-11-03 01:45:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:11,959 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1090 transitions. [2022-11-03 01:45:11,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1090 transitions. [2022-11-03 01:45:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:45:11,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:11,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:11,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:45:11,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash 519718612, now seen corresponding path program 1 times [2022-11-03 01:45:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:11,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328539925] [2022-11-03 01:45:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:11,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:12,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328539925] [2022-11-03 01:45:12,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328539925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:12,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:12,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:12,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011857755] [2022-11-03 01:45:12,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:12,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:12,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:12,054 INFO L87 Difference]: Start difference. First operand 727 states and 1090 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:12,470 INFO L93 Difference]: Finished difference Result 727 states and 1088 transitions. [2022-11-03 01:45:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:12,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-03 01:45:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:12,474 INFO L225 Difference]: With dead ends: 727 [2022-11-03 01:45:12,474 INFO L226 Difference]: Without dead ends: 727 [2022-11-03 01:45:12,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:12,475 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 486 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:12,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 655 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-03 01:45:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2022-11-03 01:45:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 552 states have (on average 1.3894927536231885) internal successors, (767), 553 states have internal predecessors, (767), 121 states have call successors, (121), 48 states have call predecessors, (121), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2022-11-03 01:45:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1088 transitions. [2022-11-03 01:45:12,501 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1088 transitions. Word has length 23 [2022-11-03 01:45:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:12,501 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1088 transitions. [2022-11-03 01:45:12,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1088 transitions. [2022-11-03 01:45:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 01:45:12,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:12,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:12,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:45:12,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:12,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1382254518, now seen corresponding path program 1 times [2022-11-03 01:45:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:12,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285562314] [2022-11-03 01:45:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:12,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:12,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:12,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285562314] [2022-11-03 01:45:12,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285562314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:12,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:12,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:12,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980850273] [2022-11-03 01:45:12,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:12,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:12,538 INFO L87 Difference]: Start difference. First operand 727 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:12,739 INFO L93 Difference]: Finished difference Result 898 states and 1337 transitions. [2022-11-03 01:45:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:12,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-03 01:45:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:12,744 INFO L225 Difference]: With dead ends: 898 [2022-11-03 01:45:12,744 INFO L226 Difference]: Without dead ends: 898 [2022-11-03 01:45:12,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:12,745 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 101 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:12,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 848 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-11-03 01:45:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 757. [2022-11-03 01:45:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 579 states have (on average 1.374784110535406) internal successors, (796), 581 states have internal predecessors, (796), 121 states have call successors, (121), 48 states have call predecessors, (121), 56 states have return successors, (206), 127 states have call predecessors, (206), 114 states have call successors, (206) [2022-11-03 01:45:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1123 transitions. [2022-11-03 01:45:12,775 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1123 transitions. Word has length 24 [2022-11-03 01:45:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:12,775 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1123 transitions. [2022-11-03 01:45:12,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1123 transitions. [2022-11-03 01:45:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 01:45:12,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:12,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:12,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:45:12,778 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2082667907, now seen corresponding path program 1 times [2022-11-03 01:45:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:12,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692444586] [2022-11-03 01:45:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:12,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:12,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692444586] [2022-11-03 01:45:12,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692444586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:12,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:12,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665423670] [2022-11-03 01:45:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:12,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:12,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:12,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:12,829 INFO L87 Difference]: Start difference. First operand 757 states and 1123 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:13,192 INFO L93 Difference]: Finished difference Result 688 states and 1001 transitions. [2022-11-03 01:45:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-03 01:45:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:13,196 INFO L225 Difference]: With dead ends: 688 [2022-11-03 01:45:13,196 INFO L226 Difference]: Without dead ends: 688 [2022-11-03 01:45:13,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:13,197 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 525 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:13,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 768 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-03 01:45:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 631. [2022-11-03 01:45:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 482 states have (on average 1.3589211618257262) internal successors, (655), 485 states have internal predecessors, (655), 103 states have call successors, (103), 40 states have call predecessors, (103), 45 states have return successors, (142), 105 states have call predecessors, (142), 96 states have call successors, (142) [2022-11-03 01:45:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 900 transitions. [2022-11-03 01:45:13,218 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 900 transitions. Word has length 28 [2022-11-03 01:45:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:13,219 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 900 transitions. [2022-11-03 01:45:13,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 900 transitions. [2022-11-03 01:45:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 01:45:13,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:13,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:13,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:45:13,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash 749083288, now seen corresponding path program 1 times [2022-11-03 01:45:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:13,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027795495] [2022-11-03 01:45:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:13,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027795495] [2022-11-03 01:45:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027795495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:13,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:13,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496517032] [2022-11-03 01:45:13,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:13,261 INFO L87 Difference]: Start difference. First operand 631 states and 900 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:13,393 INFO L93 Difference]: Finished difference Result 560 states and 776 transitions. [2022-11-03 01:45:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-03 01:45:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:13,396 INFO L225 Difference]: With dead ends: 560 [2022-11-03 01:45:13,396 INFO L226 Difference]: Without dead ends: 560 [2022-11-03 01:45:13,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:13,397 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 115 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:13,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 835 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-11-03 01:45:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 530. [2022-11-03 01:45:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 404 states have (on average 1.3465346534653466) internal successors, (544), 411 states have internal predecessors, (544), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2022-11-03 01:45:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 743 transitions. [2022-11-03 01:45:13,414 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 743 transitions. Word has length 28 [2022-11-03 01:45:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:13,414 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 743 transitions. [2022-11-03 01:45:13,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 743 transitions. [2022-11-03 01:45:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 01:45:13,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:13,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:13,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:45:13,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 344716526, now seen corresponding path program 1 times [2022-11-03 01:45:13,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:13,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39737005] [2022-11-03 01:45:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:13,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:13,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39737005] [2022-11-03 01:45:13,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39737005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:13,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:13,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174068574] [2022-11-03 01:45:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:13,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:13,472 INFO L87 Difference]: Start difference. First operand 530 states and 743 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:13,993 INFO L93 Difference]: Finished difference Result 605 states and 854 transitions. [2022-11-03 01:45:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-03 01:45:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:13,996 INFO L225 Difference]: With dead ends: 605 [2022-11-03 01:45:13,996 INFO L226 Difference]: Without dead ends: 605 [2022-11-03 01:45:13,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:13,997 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 553 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:13,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 705 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:45:13,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-03 01:45:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 533. [2022-11-03 01:45:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 407 states have (on average 1.3464373464373465) internal successors, (548), 414 states have internal predecessors, (548), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2022-11-03 01:45:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 747 transitions. [2022-11-03 01:45:14,015 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 747 transitions. Word has length 25 [2022-11-03 01:45:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:14,016 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 747 transitions. [2022-11-03 01:45:14,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 747 transitions. [2022-11-03 01:45:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 01:45:14,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:14,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:14,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:45:14,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 344993356, now seen corresponding path program 1 times [2022-11-03 01:45:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:14,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028116292] [2022-11-03 01:45:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:14,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028116292] [2022-11-03 01:45:14,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028116292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:14,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:14,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:14,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627902140] [2022-11-03 01:45:14,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:14,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:14,113 INFO L87 Difference]: Start difference. First operand 533 states and 747 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:14,283 INFO L93 Difference]: Finished difference Result 542 states and 755 transitions. [2022-11-03 01:45:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-03 01:45:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:14,286 INFO L225 Difference]: With dead ends: 542 [2022-11-03 01:45:14,286 INFO L226 Difference]: Without dead ends: 524 [2022-11-03 01:45:14,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:14,287 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 9 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:14,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1248 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-03 01:45:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-11-03 01:45:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 398 states have (on average 1.3517587939698492) internal successors, (538), 405 states have internal predecessors, (538), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2022-11-03 01:45:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 737 transitions. [2022-11-03 01:45:14,309 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 737 transitions. Word has length 25 [2022-11-03 01:45:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:14,309 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 737 transitions. [2022-11-03 01:45:14,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 737 transitions. [2022-11-03 01:45:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 01:45:14,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:14,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:14,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:45:14,311 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1894027271, now seen corresponding path program 1 times [2022-11-03 01:45:14,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:14,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097890077] [2022-11-03 01:45:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:14,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:14,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097890077] [2022-11-03 01:45:14,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097890077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:14,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:14,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040558227] [2022-11-03 01:45:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:14,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:14,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:14,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:14,365 INFO L87 Difference]: Start difference. First operand 524 states and 737 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:14,513 INFO L93 Difference]: Finished difference Result 542 states and 756 transitions. [2022-11-03 01:45:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:14,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-03 01:45:14,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:14,518 INFO L225 Difference]: With dead ends: 542 [2022-11-03 01:45:14,518 INFO L226 Difference]: Without dead ends: 540 [2022-11-03 01:45:14,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:14,519 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 60 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:14,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 748 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-03 01:45:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2022-11-03 01:45:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 410 states have (on average 1.3463414634146342) internal successors, (552), 417 states have internal predecessors, (552), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2022-11-03 01:45:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 751 transitions. [2022-11-03 01:45:14,536 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 751 transitions. Word has length 27 [2022-11-03 01:45:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:14,536 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 751 transitions. [2022-11-03 01:45:14,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 751 transitions. [2022-11-03 01:45:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 01:45:14,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:14,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:14,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 01:45:14,538 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1509671535, now seen corresponding path program 1 times [2022-11-03 01:45:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:14,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727414676] [2022-11-03 01:45:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:14,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:14,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727414676] [2022-11-03 01:45:14,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727414676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:14,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:14,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:14,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557272383] [2022-11-03 01:45:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:14,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:14,570 INFO L87 Difference]: Start difference. First operand 536 states and 751 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:14,677 INFO L93 Difference]: Finished difference Result 550 states and 761 transitions. [2022-11-03 01:45:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:14,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-03 01:45:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:14,680 INFO L225 Difference]: With dead ends: 550 [2022-11-03 01:45:14,680 INFO L226 Difference]: Without dead ends: 550 [2022-11-03 01:45:14,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:14,681 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 409 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:14,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 514 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-03 01:45:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 533. [2022-11-03 01:45:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 408 states have (on average 1.3431372549019607) internal successors, (548), 414 states have internal predecessors, (548), 90 states have call successors, (90), 31 states have call predecessors, (90), 34 states have return successors, (105), 87 states have call predecessors, (105), 83 states have call successors, (105) [2022-11-03 01:45:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 743 transitions. [2022-11-03 01:45:14,721 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 743 transitions. Word has length 29 [2022-11-03 01:45:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:14,722 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 743 transitions. [2022-11-03 01:45:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 743 transitions. [2022-11-03 01:45:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 01:45:14,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:14,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:14,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 01:45:14,724 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:14,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -642455764, now seen corresponding path program 1 times [2022-11-03 01:45:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:14,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509514224] [2022-11-03 01:45:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:14,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:14,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509514224] [2022-11-03 01:45:14,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509514224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:14,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:14,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690813844] [2022-11-03 01:45:14,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:14,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:14,802 INFO L87 Difference]: Start difference. First operand 533 states and 743 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:15,322 INFO L93 Difference]: Finished difference Result 537 states and 745 transitions. [2022-11-03 01:45:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-03 01:45:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:15,325 INFO L225 Difference]: With dead ends: 537 [2022-11-03 01:45:15,326 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 01:45:15,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:15,326 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 532 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:15,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 842 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:45:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 01:45:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 533. [2022-11-03 01:45:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 408 states have (on average 1.3406862745098038) internal successors, (547), 414 states have internal predecessors, (547), 90 states have call successors, (90), 31 states have call predecessors, (90), 34 states have return successors, (105), 87 states have call predecessors, (105), 83 states have call successors, (105) [2022-11-03 01:45:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 742 transitions. [2022-11-03 01:45:15,343 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 742 transitions. Word has length 29 [2022-11-03 01:45:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:15,343 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 742 transitions. [2022-11-03 01:45:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 742 transitions. [2022-11-03 01:45:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 01:45:15,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:15,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:15,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 01:45:15,345 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1871765062, now seen corresponding path program 1 times [2022-11-03 01:45:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:15,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889258289] [2022-11-03 01:45:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:15,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:15,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889258289] [2022-11-03 01:45:15,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889258289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:15,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:15,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:15,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559920124] [2022-11-03 01:45:15,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:15,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:15,429 INFO L87 Difference]: Start difference. First operand 533 states and 742 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:15,710 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2022-11-03 01:45:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:15,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-03 01:45:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:15,713 INFO L225 Difference]: With dead ends: 549 [2022-11-03 01:45:15,713 INFO L226 Difference]: Without dead ends: 528 [2022-11-03 01:45:15,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:15,714 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 38 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:15,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2001 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-03 01:45:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-11-03 01:45:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.3185185185185184) internal successors, (534), 411 states have internal predecessors, (534), 88 states have call successors, (88), 31 states have call predecessors, (88), 34 states have return successors, (103), 85 states have call predecessors, (103), 81 states have call successors, (103) [2022-11-03 01:45:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 725 transitions. [2022-11-03 01:45:15,731 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 725 transitions. Word has length 30 [2022-11-03 01:45:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:15,731 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 725 transitions. [2022-11-03 01:45:15,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 725 transitions. [2022-11-03 01:45:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:15,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:15,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:15,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 01:45:15,734 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1200573299, now seen corresponding path program 1 times [2022-11-03 01:45:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:15,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612443604] [2022-11-03 01:45:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:15,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:15,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612443604] [2022-11-03 01:45:15,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612443604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:15,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:15,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534261369] [2022-11-03 01:45:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:15,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:15,979 INFO L87 Difference]: Start difference. First operand 528 states and 725 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:16,508 INFO L93 Difference]: Finished difference Result 557 states and 754 transitions. [2022-11-03 01:45:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-03 01:45:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:16,511 INFO L225 Difference]: With dead ends: 557 [2022-11-03 01:45:16,511 INFO L226 Difference]: Without dead ends: 542 [2022-11-03 01:45:16,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:16,512 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 38 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:16,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3174 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-03 01:45:16,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 526. [2022-11-03 01:45:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 404 states have (on average 1.316831683168317) internal successors, (532), 410 states have internal predecessors, (532), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (102), 84 states have call predecessors, (102), 80 states have call successors, (102) [2022-11-03 01:45:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 721 transitions. [2022-11-03 01:45:16,528 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 721 transitions. Word has length 36 [2022-11-03 01:45:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:16,528 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 721 transitions. [2022-11-03 01:45:16,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 721 transitions. [2022-11-03 01:45:16,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:45:16,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:16,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:16,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 01:45:16,531 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1742708472, now seen corresponding path program 1 times [2022-11-03 01:45:16,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:16,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359713091] [2022-11-03 01:45:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:16,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:16,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:16,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359713091] [2022-11-03 01:45:16,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359713091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:16,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:16,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:16,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642972651] [2022-11-03 01:45:16,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:16,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:16,752 INFO L87 Difference]: Start difference. First operand 526 states and 721 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:17,200 INFO L93 Difference]: Finished difference Result 555 states and 750 transitions. [2022-11-03 01:45:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-11-03 01:45:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:17,206 INFO L225 Difference]: With dead ends: 555 [2022-11-03 01:45:17,206 INFO L226 Difference]: Without dead ends: 540 [2022-11-03 01:45:17,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:17,207 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 40 mSDsluCounter, 3053 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3053 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-03 01:45:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 524. [2022-11-03 01:45:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 403 states have (on average 1.315136476426799) internal successors, (530), 409 states have internal predecessors, (530), 86 states have call successors, (86), 31 states have call predecessors, (86), 34 states have return successors, (101), 83 states have call predecessors, (101), 79 states have call successors, (101) [2022-11-03 01:45:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 717 transitions. [2022-11-03 01:45:17,222 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 717 transitions. Word has length 35 [2022-11-03 01:45:17,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:17,222 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 717 transitions. [2022-11-03 01:45:17,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:17,222 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 717 transitions. [2022-11-03 01:45:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 01:45:17,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:17,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 01:45:17,225 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -514714199, now seen corresponding path program 1 times [2022-11-03 01:45:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:17,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676572932] [2022-11-03 01:45:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:17,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:17,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676572932] [2022-11-03 01:45:17,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676572932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:17,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:17,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:17,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811106690] [2022-11-03 01:45:17,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:17,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:17,454 INFO L87 Difference]: Start difference. First operand 524 states and 717 transitions. Second operand has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:17,886 INFO L93 Difference]: Finished difference Result 539 states and 732 transitions. [2022-11-03 01:45:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:17,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-03 01:45:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:17,888 INFO L225 Difference]: With dead ends: 539 [2022-11-03 01:45:17,889 INFO L226 Difference]: Without dead ends: 523 [2022-11-03 01:45:17,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:17,889 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 36 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:17,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3008 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-03 01:45:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2022-11-03 01:45:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 402 states have (on average 1.291044776119403) internal successors, (519), 408 states have internal predecessors, (519), 86 states have call successors, (86), 31 states have call predecessors, (86), 34 states have return successors, (101), 83 states have call predecessors, (101), 79 states have call successors, (101) [2022-11-03 01:45:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 706 transitions. [2022-11-03 01:45:17,904 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 706 transitions. Word has length 33 [2022-11-03 01:45:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:17,904 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 706 transitions. [2022-11-03 01:45:17,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 706 transitions. [2022-11-03 01:45:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:45:17,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:17,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:17,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 01:45:17,907 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:17,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1582347793, now seen corresponding path program 1 times [2022-11-03 01:45:17,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:17,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050170066] [2022-11-03 01:45:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:17,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:17,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:17,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050170066] [2022-11-03 01:45:17,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050170066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:17,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:17,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397716590] [2022-11-03 01:45:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:17,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:17,944 INFO L87 Difference]: Start difference. First operand 523 states and 706 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:18,082 INFO L93 Difference]: Finished difference Result 503 states and 678 transitions. [2022-11-03 01:45:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:18,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-03 01:45:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:18,085 INFO L225 Difference]: With dead ends: 503 [2022-11-03 01:45:18,085 INFO L226 Difference]: Without dead ends: 503 [2022-11-03 01:45:18,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:18,086 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:18,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 725 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-03 01:45:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-11-03 01:45:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 385 states have (on average 1.283116883116883) internal successors, (494), 390 states have internal predecessors, (494), 85 states have call successors, (85), 31 states have call predecessors, (85), 32 states have return successors, (99), 81 states have call predecessors, (99), 79 states have call successors, (99) [2022-11-03 01:45:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 678 transitions. [2022-11-03 01:45:18,100 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 678 transitions. Word has length 34 [2022-11-03 01:45:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:18,101 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 678 transitions. [2022-11-03 01:45:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 678 transitions. [2022-11-03 01:45:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 01:45:18,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:18,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:18,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 01:45:18,103 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash 363174257, now seen corresponding path program 1 times [2022-11-03 01:45:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579718916] [2022-11-03 01:45:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:18,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579718916] [2022-11-03 01:45:18,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579718916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:18,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:18,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:18,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055187077] [2022-11-03 01:45:18,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:18,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:18,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:18,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:18,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:18,190 INFO L87 Difference]: Start difference. First operand 503 states and 678 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:18,463 INFO L93 Difference]: Finished difference Result 516 states and 690 transitions. [2022-11-03 01:45:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:18,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-11-03 01:45:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:18,465 INFO L225 Difference]: With dead ends: 516 [2022-11-03 01:45:18,465 INFO L226 Difference]: Without dead ends: 497 [2022-11-03 01:45:18,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:18,466 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 38 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:18,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1837 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-03 01:45:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-11-03 01:45:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 382 states have (on average 1.2774869109947644) internal successors, (488), 387 states have internal predecessors, (488), 82 states have call successors, (82), 31 states have call predecessors, (82), 32 states have return successors, (96), 78 states have call predecessors, (96), 76 states have call successors, (96) [2022-11-03 01:45:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 666 transitions. [2022-11-03 01:45:18,487 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 666 transitions. Word has length 33 [2022-11-03 01:45:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:18,487 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 666 transitions. [2022-11-03 01:45:18,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 666 transitions. [2022-11-03 01:45:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:45:18,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:18,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:18,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 01:45:18,490 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:18,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash -364906511, now seen corresponding path program 1 times [2022-11-03 01:45:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:18,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114671498] [2022-11-03 01:45:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:18,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:18,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:18,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114671498] [2022-11-03 01:45:18,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114671498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:18,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:18,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385685294] [2022-11-03 01:45:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:18,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:18,598 INFO L87 Difference]: Start difference. First operand 497 states and 666 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:18,850 INFO L93 Difference]: Finished difference Result 514 states and 683 transitions. [2022-11-03 01:45:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:18,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-03 01:45:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:18,853 INFO L225 Difference]: With dead ends: 514 [2022-11-03 01:45:18,853 INFO L226 Difference]: Without dead ends: 493 [2022-11-03 01:45:18,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:18,854 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 40 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:18,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1800 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-03 01:45:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-11-03 01:45:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 380 states have (on average 1.268421052631579) internal successors, (482), 385 states have internal predecessors, (482), 80 states have call successors, (80), 31 states have call predecessors, (80), 32 states have return successors, (94), 76 states have call predecessors, (94), 74 states have call successors, (94) [2022-11-03 01:45:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 656 transitions. [2022-11-03 01:45:18,890 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 656 transitions. Word has length 34 [2022-11-03 01:45:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:18,890 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 656 transitions. [2022-11-03 01:45:18,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 656 transitions. [2022-11-03 01:45:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:45:18,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:18,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:18,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 01:45:18,893 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash -565025785, now seen corresponding path program 1 times [2022-11-03 01:45:18,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:18,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658768727] [2022-11-03 01:45:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:19,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:19,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658768727] [2022-11-03 01:45:19,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658768727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:19,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:19,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271676700] [2022-11-03 01:45:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:19,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:19,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:19,112 INFO L87 Difference]: Start difference. First operand 493 states and 656 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:19,520 INFO L93 Difference]: Finished difference Result 503 states and 665 transitions. [2022-11-03 01:45:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:19,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-11-03 01:45:19,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:19,523 INFO L225 Difference]: With dead ends: 503 [2022-11-03 01:45:19,523 INFO L226 Difference]: Without dead ends: 491 [2022-11-03 01:45:19,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:19,524 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 10 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:19,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2776 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-03 01:45:19,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2022-11-03 01:45:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 379 states have (on average 1.266490765171504) internal successors, (480), 384 states have internal predecessors, (480), 79 states have call successors, (79), 31 states have call predecessors, (79), 32 states have return successors, (93), 75 states have call predecessors, (93), 73 states have call successors, (93) [2022-11-03 01:45:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 652 transitions. [2022-11-03 01:45:19,541 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 652 transitions. Word has length 35 [2022-11-03 01:45:19,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:19,542 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 652 transitions. [2022-11-03 01:45:19,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 652 transitions. [2022-11-03 01:45:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:19,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:19,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:19,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 01:45:19,544 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:19,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1916364698, now seen corresponding path program 1 times [2022-11-03 01:45:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:19,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970670149] [2022-11-03 01:45:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:19,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:19,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:19,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970670149] [2022-11-03 01:45:19,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970670149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751671595] [2022-11-03 01:45:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:19,730 INFO L87 Difference]: Start difference. First operand 491 states and 652 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:20,155 INFO L93 Difference]: Finished difference Result 500 states and 660 transitions. [2022-11-03 01:45:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:20,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-11-03 01:45:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:20,158 INFO L225 Difference]: With dead ends: 500 [2022-11-03 01:45:20,158 INFO L226 Difference]: Without dead ends: 488 [2022-11-03 01:45:20,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:20,159 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 10 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:20,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2752 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-03 01:45:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-11-03 01:45:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 377 states have (on average 1.2652519893899203) internal successors, (477), 382 states have internal predecessors, (477), 78 states have call successors, (78), 31 states have call predecessors, (78), 32 states have return successors, (92), 74 states have call predecessors, (92), 72 states have call successors, (92) [2022-11-03 01:45:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 647 transitions. [2022-11-03 01:45:20,172 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 647 transitions. Word has length 36 [2022-11-03 01:45:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:20,173 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 647 transitions. [2022-11-03 01:45:20,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 647 transitions. [2022-11-03 01:45:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:20,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:20,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:20,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 01:45:20,175 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash -615535555, now seen corresponding path program 1 times [2022-11-03 01:45:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:20,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794062599] [2022-11-03 01:45:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:20,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:20,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:20,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794062599] [2022-11-03 01:45:20,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794062599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:20,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:20,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:20,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42680820] [2022-11-03 01:45:20,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:20,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:20,357 INFO L87 Difference]: Start difference. First operand 488 states and 647 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:20,751 INFO L93 Difference]: Finished difference Result 498 states and 656 transitions. [2022-11-03 01:45:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-11-03 01:45:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:20,754 INFO L225 Difference]: With dead ends: 498 [2022-11-03 01:45:20,755 INFO L226 Difference]: Without dead ends: 486 [2022-11-03 01:45:20,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:20,755 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 10 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:20,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2732 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-03 01:45:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-11-03 01:45:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 376 states have (on average 1.2632978723404256) internal successors, (475), 381 states have internal predecessors, (475), 77 states have call successors, (77), 31 states have call predecessors, (77), 32 states have return successors, (91), 73 states have call predecessors, (91), 71 states have call successors, (91) [2022-11-03 01:45:20,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 643 transitions. [2022-11-03 01:45:20,769 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 643 transitions. Word has length 36 [2022-11-03 01:45:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:20,769 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 643 transitions. [2022-11-03 01:45:20,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 643 transitions. [2022-11-03 01:45:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:20,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:20,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:20,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 01:45:20,772 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1703217503, now seen corresponding path program 1 times [2022-11-03 01:45:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:20,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914692743] [2022-11-03 01:45:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:20,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:20,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:20,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914692743] [2022-11-03 01:45:20,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914692743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:20,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:20,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873883035] [2022-11-03 01:45:20,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:20,830 INFO L87 Difference]: Start difference. First operand 486 states and 643 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:21,028 INFO L93 Difference]: Finished difference Result 514 states and 687 transitions. [2022-11-03 01:45:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:45:21,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-03 01:45:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:21,032 INFO L225 Difference]: With dead ends: 514 [2022-11-03 01:45:21,033 INFO L226 Difference]: Without dead ends: 514 [2022-11-03 01:45:21,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:21,034 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 15 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:21,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1367 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-03 01:45:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 496. [2022-11-03 01:45:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 382 states have (on average 1.2591623036649215) internal successors, (481), 390 states have internal predecessors, (481), 77 states have call successors, (77), 31 states have call predecessors, (77), 36 states have return successors, (110), 74 states have call predecessors, (110), 71 states have call successors, (110) [2022-11-03 01:45:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 668 transitions. [2022-11-03 01:45:21,056 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 668 transitions. Word has length 36 [2022-11-03 01:45:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:21,057 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 668 transitions. [2022-11-03 01:45:21,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 668 transitions. [2022-11-03 01:45:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:21,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:21,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:21,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 01:45:21,059 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:21,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1191813034, now seen corresponding path program 1 times [2022-11-03 01:45:21,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:21,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401453659] [2022-11-03 01:45:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:21,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:21,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401453659] [2022-11-03 01:45:21,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401453659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:21,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:21,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861328919] [2022-11-03 01:45:21,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:21,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:21,152 INFO L87 Difference]: Start difference. First operand 496 states and 668 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:21,376 INFO L93 Difference]: Finished difference Result 509 states and 680 transitions. [2022-11-03 01:45:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:21,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-03 01:45:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:21,379 INFO L225 Difference]: With dead ends: 509 [2022-11-03 01:45:21,380 INFO L226 Difference]: Without dead ends: 492 [2022-11-03 01:45:21,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:21,381 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 36 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:21,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1729 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:21,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-03 01:45:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2022-11-03 01:45:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 379 states have (on average 1.2585751978891822) internal successors, (477), 388 states have internal predecessors, (477), 76 states have call successors, (76), 31 states have call predecessors, (76), 36 states have return successors, (108), 72 states have call predecessors, (108), 70 states have call successors, (108) [2022-11-03 01:45:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 661 transitions. [2022-11-03 01:45:21,396 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 661 transitions. Word has length 36 [2022-11-03 01:45:21,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:21,396 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 661 transitions. [2022-11-03 01:45:21,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:21,397 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 661 transitions. [2022-11-03 01:45:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 01:45:21,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:21,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:21,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 01:45:21,399 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:21,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1116501047, now seen corresponding path program 1 times [2022-11-03 01:45:21,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:21,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266664052] [2022-11-03 01:45:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:21,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:21,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:21,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266664052] [2022-11-03 01:45:21,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266664052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:21,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:21,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:21,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531806822] [2022-11-03 01:45:21,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:21,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:21,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:21,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:21,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:21,464 INFO L87 Difference]: Start difference. First operand 492 states and 661 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:21,683 INFO L93 Difference]: Finished difference Result 544 states and 719 transitions. [2022-11-03 01:45:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:45:21,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-11-03 01:45:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:21,686 INFO L225 Difference]: With dead ends: 544 [2022-11-03 01:45:21,686 INFO L226 Difference]: Without dead ends: 544 [2022-11-03 01:45:21,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:21,687 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 109 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:21,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1362 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-03 01:45:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 496. [2022-11-03 01:45:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 382 states have (on average 1.256544502617801) internal successors, (480), 391 states have internal predecessors, (480), 77 states have call successors, (77), 31 states have call predecessors, (77), 36 states have return successors, (110), 73 states have call predecessors, (110), 71 states have call successors, (110) [2022-11-03 01:45:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 667 transitions. [2022-11-03 01:45:21,704 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 667 transitions. Word has length 37 [2022-11-03 01:45:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:21,704 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 667 transitions. [2022-11-03 01:45:21,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 667 transitions. [2022-11-03 01:45:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 01:45:21,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:21,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:21,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 01:45:21,709 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:21,710 INFO L85 PathProgramCache]: Analyzing trace with hash 507759881, now seen corresponding path program 1 times [2022-11-03 01:45:21,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:21,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795975120] [2022-11-03 01:45:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:21,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:21,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:21,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795975120] [2022-11-03 01:45:21,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795975120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:21,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:21,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:45:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089910839] [2022-11-03 01:45:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:21,931 INFO L87 Difference]: Start difference. First operand 496 states and 667 transitions. Second operand has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:22,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:22,349 INFO L93 Difference]: Finished difference Result 506 states and 676 transitions. [2022-11-03 01:45:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:45:22,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2022-11-03 01:45:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:22,352 INFO L225 Difference]: With dead ends: 506 [2022-11-03 01:45:22,352 INFO L226 Difference]: Without dead ends: 493 [2022-11-03 01:45:22,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:45:22,353 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 20 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:22,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3007 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-03 01:45:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-11-03 01:45:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 380 states have (on average 1.2552631578947369) internal successors, (477), 389 states have internal predecessors, (477), 76 states have call successors, (76), 31 states have call predecessors, (76), 36 states have return successors, (109), 72 states have call predecessors, (109), 70 states have call successors, (109) [2022-11-03 01:45:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 662 transitions. [2022-11-03 01:45:22,368 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 662 transitions. Word has length 38 [2022-11-03 01:45:22,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:22,368 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 662 transitions. [2022-11-03 01:45:22,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 662 transitions. [2022-11-03 01:45:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 01:45:22,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:22,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:22,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 01:45:22,370 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:22,371 INFO L85 PathProgramCache]: Analyzing trace with hash 921026335, now seen corresponding path program 1 times [2022-11-03 01:45:22,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:22,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540269146] [2022-11-03 01:45:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:22,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:22,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:22,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540269146] [2022-11-03 01:45:22,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540269146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:22,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:22,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:45:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36442847] [2022-11-03 01:45:22,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:22,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:22,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:22,606 INFO L87 Difference]: Start difference. First operand 493 states and 662 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:23,028 INFO L93 Difference]: Finished difference Result 503 states and 671 transitions. [2022-11-03 01:45:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:45:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-11-03 01:45:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:23,031 INFO L225 Difference]: With dead ends: 503 [2022-11-03 01:45:23,031 INFO L226 Difference]: Without dead ends: 490 [2022-11-03 01:45:23,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:45:23,032 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 20 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:23,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2986 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-03 01:45:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2022-11-03 01:45:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 378 states have (on average 1.253968253968254) internal successors, (474), 387 states have internal predecessors, (474), 75 states have call successors, (75), 31 states have call predecessors, (75), 36 states have return successors, (108), 71 states have call predecessors, (108), 69 states have call successors, (108) [2022-11-03 01:45:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 657 transitions. [2022-11-03 01:45:23,045 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 657 transitions. Word has length 37 [2022-11-03 01:45:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:23,045 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 657 transitions. [2022-11-03 01:45:23,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 657 transitions. [2022-11-03 01:45:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 01:45:23,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:23,047 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:23,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 01:45:23,048 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:23,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:23,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2125200686, now seen corresponding path program 1 times [2022-11-03 01:45:23,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:23,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095312352] [2022-11-03 01:45:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:23,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:23,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095312352] [2022-11-03 01:45:23,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095312352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:23,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:23,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:23,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233172317] [2022-11-03 01:45:23,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:23,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:23,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:23,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:23,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:23,111 INFO L87 Difference]: Start difference. First operand 490 states and 657 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:45:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:23,539 INFO L93 Difference]: Finished difference Result 483 states and 635 transitions. [2022-11-03 01:45:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2022-11-03 01:45:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:23,542 INFO L225 Difference]: With dead ends: 483 [2022-11-03 01:45:23,542 INFO L226 Difference]: Without dead ends: 483 [2022-11-03 01:45:23,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:23,543 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 391 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:23,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 635 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-03 01:45:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-11-03 01:45:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 373 states have (on average 1.2412868632707774) internal successors, (463), 381 states have internal predecessors, (463), 74 states have call successors, (74), 31 states have call predecessors, (74), 35 states have return successors, (98), 70 states have call predecessors, (98), 68 states have call successors, (98) [2022-11-03 01:45:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 635 transitions. [2022-11-03 01:45:23,562 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 635 transitions. Word has length 51 [2022-11-03 01:45:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:23,563 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 635 transitions. [2022-11-03 01:45:23,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:45:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 635 transitions. [2022-11-03 01:45:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 01:45:23,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:23,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:23,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-03 01:45:23,565 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash -163424653, now seen corresponding path program 1 times [2022-11-03 01:45:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:23,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681432584] [2022-11-03 01:45:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:23,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:23,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681432584] [2022-11-03 01:45:23,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681432584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:23,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:23,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721727101] [2022-11-03 01:45:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:23,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:23,646 INFO L87 Difference]: Start difference. First operand 483 states and 635 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:45:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:23,752 INFO L93 Difference]: Finished difference Result 500 states and 648 transitions. [2022-11-03 01:45:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:23,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-03 01:45:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:23,755 INFO L225 Difference]: With dead ends: 500 [2022-11-03 01:45:23,756 INFO L226 Difference]: Without dead ends: 500 [2022-11-03 01:45:23,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:23,757 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 76 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:23,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 692 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-03 01:45:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 484. [2022-11-03 01:45:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 374 states have (on average 1.2352941176470589) internal successors, (462), 381 states have internal predecessors, (462), 73 states have call successors, (73), 32 states have call predecessors, (73), 36 states have return successors, (98), 70 states have call predecessors, (98), 68 states have call successors, (98) [2022-11-03 01:45:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 633 transitions. [2022-11-03 01:45:23,773 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 633 transitions. Word has length 40 [2022-11-03 01:45:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:23,773 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 633 transitions. [2022-11-03 01:45:23,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:45:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 633 transitions. [2022-11-03 01:45:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 01:45:23,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:23,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:23,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-03 01:45:23,776 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash -267026314, now seen corresponding path program 1 times [2022-11-03 01:45:23,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:23,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123264509] [2022-11-03 01:45:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:23,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:23,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123264509] [2022-11-03 01:45:23,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123264509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:23,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:23,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671160254] [2022-11-03 01:45:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:23,920 INFO L87 Difference]: Start difference. First operand 484 states and 633 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:24,249 INFO L93 Difference]: Finished difference Result 508 states and 660 transitions. [2022-11-03 01:45:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:24,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-11-03 01:45:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:24,252 INFO L225 Difference]: With dead ends: 508 [2022-11-03 01:45:24,252 INFO L226 Difference]: Without dead ends: 493 [2022-11-03 01:45:24,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:24,253 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 38 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:24,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2312 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-03 01:45:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-11-03 01:45:24,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 374 states have (on average 1.2352941176470589) internal successors, (462), 381 states have internal predecessors, (462), 73 states have call successors, (73), 32 states have call predecessors, (73), 36 states have return successors, (98), 70 states have call predecessors, (98), 68 states have call successors, (98) [2022-11-03 01:45:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 633 transitions. [2022-11-03 01:45:24,267 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 633 transitions. Word has length 38 [2022-11-03 01:45:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:24,267 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 633 transitions. [2022-11-03 01:45:24,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 633 transitions. [2022-11-03 01:45:24,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 01:45:24,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:24,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:24,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-03 01:45:24,270 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:24,270 INFO L85 PathProgramCache]: Analyzing trace with hash -798940260, now seen corresponding path program 1 times [2022-11-03 01:45:24,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:24,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651224007] [2022-11-03 01:45:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:24,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:24,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651224007] [2022-11-03 01:45:24,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651224007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:24,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:24,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:24,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596324593] [2022-11-03 01:45:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:24,302 INFO L87 Difference]: Start difference. First operand 484 states and 633 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:24,396 INFO L93 Difference]: Finished difference Result 432 states and 543 transitions. [2022-11-03 01:45:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:24,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-11-03 01:45:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:24,399 INFO L225 Difference]: With dead ends: 432 [2022-11-03 01:45:24,399 INFO L226 Difference]: Without dead ends: 430 [2022-11-03 01:45:24,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:24,400 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:24,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 631 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-03 01:45:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 413. [2022-11-03 01:45:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 321 states have (on average 1.2149532710280373) internal successors, (390), 325 states have internal predecessors, (390), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (63), 59 states have call predecessors, (63), 58 states have call successors, (63) [2022-11-03 01:45:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 516 transitions. [2022-11-03 01:45:24,409 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 516 transitions. Word has length 38 [2022-11-03 01:45:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:24,410 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 516 transitions. [2022-11-03 01:45:24,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 516 transitions. [2022-11-03 01:45:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 01:45:24,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:24,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:24,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-03 01:45:24,415 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1620751938, now seen corresponding path program 1 times [2022-11-03 01:45:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:24,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45131090] [2022-11-03 01:45:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:24,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45131090] [2022-11-03 01:45:24,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45131090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:24,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:24,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:45:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24954284] [2022-11-03 01:45:24,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:24,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:45:24,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:45:24,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:24,625 INFO L87 Difference]: Start difference. First operand 413 states and 516 transitions. Second operand has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:25,113 INFO L93 Difference]: Finished difference Result 442 states and 545 transitions. [2022-11-03 01:45:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:45:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2022-11-03 01:45:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:25,115 INFO L225 Difference]: With dead ends: 442 [2022-11-03 01:45:25,115 INFO L226 Difference]: Without dead ends: 424 [2022-11-03 01:45:25,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:45:25,116 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 51 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:25,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2997 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-03 01:45:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 410. [2022-11-03 01:45:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 319 states have (on average 1.213166144200627) internal successors, (387), 323 states have internal predecessors, (387), 62 states have call successors, (62), 28 states have call predecessors, (62), 28 states have return successors, (62), 58 states have call predecessors, (62), 57 states have call successors, (62) [2022-11-03 01:45:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 511 transitions. [2022-11-03 01:45:25,126 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 511 transitions. Word has length 41 [2022-11-03 01:45:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:25,127 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 511 transitions. [2022-11-03 01:45:25,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 511 transitions. [2022-11-03 01:45:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:45:25,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:25,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-03 01:45:25,130 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1406798473, now seen corresponding path program 1 times [2022-11-03 01:45:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:25,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250948141] [2022-11-03 01:45:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:25,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:25,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250948141] [2022-11-03 01:45:25,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250948141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:25,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:25,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:45:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326895841] [2022-11-03 01:45:25,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:25,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:45:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:25,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:45:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:25,402 INFO L87 Difference]: Start difference. First operand 410 states and 511 transitions. Second operand has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:25,833 INFO L93 Difference]: Finished difference Result 439 states and 540 transitions. [2022-11-03 01:45:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:45:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-03 01:45:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:25,835 INFO L225 Difference]: With dead ends: 439 [2022-11-03 01:45:25,836 INFO L226 Difference]: Without dead ends: 421 [2022-11-03 01:45:25,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:45:25,836 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 39 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:25,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3039 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-11-03 01:45:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 407. [2022-11-03 01:45:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 317 states have (on average 1.2113564668769716) internal successors, (384), 321 states have internal predecessors, (384), 61 states have call successors, (61), 28 states have call predecessors, (61), 28 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-11-03 01:45:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 506 transitions. [2022-11-03 01:45:25,846 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 506 transitions. Word has length 42 [2022-11-03 01:45:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:25,846 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 506 transitions. [2022-11-03 01:45:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 506 transitions. [2022-11-03 01:45:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 01:45:25,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:25,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:25,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-03 01:45:25,849 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash -154714097, now seen corresponding path program 1 times [2022-11-03 01:45:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:25,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038049265] [2022-11-03 01:45:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:26,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:26,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038049265] [2022-11-03 01:45:26,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038049265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:26,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:26,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:26,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460001264] [2022-11-03 01:45:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:26,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:26,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:26,019 INFO L87 Difference]: Start difference. First operand 407 states and 506 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:26,356 INFO L93 Difference]: Finished difference Result 434 states and 532 transitions. [2022-11-03 01:45:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2022-11-03 01:45:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:26,358 INFO L225 Difference]: With dead ends: 434 [2022-11-03 01:45:26,358 INFO L226 Difference]: Without dead ends: 419 [2022-11-03 01:45:26,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:26,359 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 38 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:26,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2413 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-03 01:45:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 405. [2022-11-03 01:45:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 316 states have (on average 1.2088607594936709) internal successors, (382), 320 states have internal predecessors, (382), 60 states have call successors, (60), 28 states have call predecessors, (60), 28 states have return successors, (60), 56 states have call predecessors, (60), 55 states have call successors, (60) [2022-11-03 01:45:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 502 transitions. [2022-11-03 01:45:26,369 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 502 transitions. Word has length 41 [2022-11-03 01:45:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:26,369 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 502 transitions. [2022-11-03 01:45:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 502 transitions. [2022-11-03 01:45:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 01:45:26,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:26,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:26,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-03 01:45:26,371 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:26,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1691462470, now seen corresponding path program 1 times [2022-11-03 01:45:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:26,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888653190] [2022-11-03 01:45:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:26,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:26,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888653190] [2022-11-03 01:45:26,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888653190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:26,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:26,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:26,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500601653] [2022-11-03 01:45:26,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:26,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:26,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:26,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:26,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:26,523 INFO L87 Difference]: Start difference. First operand 405 states and 502 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:26,843 INFO L93 Difference]: Finished difference Result 418 states and 514 transitions. [2022-11-03 01:45:26,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:26,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2022-11-03 01:45:26,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:26,846 INFO L225 Difference]: With dead ends: 418 [2022-11-03 01:45:26,846 INFO L226 Difference]: Without dead ends: 403 [2022-11-03 01:45:26,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:26,847 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 36 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:26,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2358 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-03 01:45:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-11-03 01:45:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 315 states have (on average 1.2063492063492063) internal successors, (380), 319 states have internal predecessors, (380), 59 states have call successors, (59), 28 states have call predecessors, (59), 28 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-11-03 01:45:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 498 transitions. [2022-11-03 01:45:26,856 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 498 transitions. Word has length 40 [2022-11-03 01:45:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:26,856 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 498 transitions. [2022-11-03 01:45:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 498 transitions. [2022-11-03 01:45:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 01:45:26,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:26,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:26,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-03 01:45:26,859 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2120938148, now seen corresponding path program 1 times [2022-11-03 01:45:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963910310] [2022-11-03 01:45:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:26,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:27,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:27,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963910310] [2022-11-03 01:45:27,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963910310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:27,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:27,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:27,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110850083] [2022-11-03 01:45:27,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:27,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:27,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:27,020 INFO L87 Difference]: Start difference. First operand 403 states and 498 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:27,315 INFO L93 Difference]: Finished difference Result 419 states and 514 transitions. [2022-11-03 01:45:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:27,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-11-03 01:45:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:27,317 INFO L225 Difference]: With dead ends: 419 [2022-11-03 01:45:27,317 INFO L226 Difference]: Without dead ends: 400 [2022-11-03 01:45:27,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:27,318 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 36 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:27,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2106 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-03 01:45:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-03 01:45:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 313 states have (on average 1.2044728434504792) internal successors, (377), 317 states have internal predecessors, (377), 58 states have call successors, (58), 28 states have call predecessors, (58), 28 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-03 01:45:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 493 transitions. [2022-11-03 01:45:27,327 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 493 transitions. Word has length 39 [2022-11-03 01:45:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:27,328 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 493 transitions. [2022-11-03 01:45:27,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 493 transitions. [2022-11-03 01:45:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:45:27,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:27,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-03 01:45:27,331 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash -529492645, now seen corresponding path program 1 times [2022-11-03 01:45:27,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:27,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933435186] [2022-11-03 01:45:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:27,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:27,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933435186] [2022-11-03 01:45:27,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933435186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:27,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:27,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:27,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907498371] [2022-11-03 01:45:27,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:27,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:27,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:27,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:27,371 INFO L87 Difference]: Start difference. First operand 400 states and 493 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:45:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:27,457 INFO L93 Difference]: Finished difference Result 400 states and 492 transitions. [2022-11-03 01:45:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:27,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-11-03 01:45:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:27,459 INFO L225 Difference]: With dead ends: 400 [2022-11-03 01:45:27,459 INFO L226 Difference]: Without dead ends: 400 [2022-11-03 01:45:27,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:27,460 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:27,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 590 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-03 01:45:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-03 01:45:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 313 states have (on average 1.2012779552715656) internal successors, (376), 317 states have internal predecessors, (376), 58 states have call successors, (58), 28 states have call predecessors, (58), 28 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-03 01:45:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 492 transitions. [2022-11-03 01:45:27,470 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 492 transitions. Word has length 42 [2022-11-03 01:45:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:27,470 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 492 transitions. [2022-11-03 01:45:27,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:45:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 492 transitions. [2022-11-03 01:45:27,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:45:27,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:27,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:27,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-03 01:45:27,473 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash 890888408, now seen corresponding path program 1 times [2022-11-03 01:45:27,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:27,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189650406] [2022-11-03 01:45:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:27,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:27,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189650406] [2022-11-03 01:45:27,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189650406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:27,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:27,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:45:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239303899] [2022-11-03 01:45:27,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:27,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:45:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:45:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:27,680 INFO L87 Difference]: Start difference. First operand 400 states and 492 transitions. Second operand has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:28,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:28,079 INFO L93 Difference]: Finished difference Result 415 states and 507 transitions. [2022-11-03 01:45:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:45:28,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-03 01:45:28,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:28,082 INFO L225 Difference]: With dead ends: 415 [2022-11-03 01:45:28,082 INFO L226 Difference]: Without dead ends: 398 [2022-11-03 01:45:28,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:45:28,082 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 36 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:28,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2926 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:28,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-03 01:45:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2022-11-03 01:45:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 312 states have (on average 1.1987179487179487) internal successors, (374), 316 states have internal predecessors, (374), 57 states have call successors, (57), 28 states have call predecessors, (57), 28 states have return successors, (57), 53 states have call predecessors, (57), 52 states have call successors, (57) [2022-11-03 01:45:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 488 transitions. [2022-11-03 01:45:28,094 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 488 transitions. Word has length 42 [2022-11-03 01:45:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:28,094 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 488 transitions. [2022-11-03 01:45:28,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 488 transitions. [2022-11-03 01:45:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:45:28,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:28,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:28,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-03 01:45:28,096 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash -339977302, now seen corresponding path program 1 times [2022-11-03 01:45:28,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:28,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529466644] [2022-11-03 01:45:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:28,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:28,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529466644] [2022-11-03 01:45:28,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529466644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:28,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:28,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:45:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695494615] [2022-11-03 01:45:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:28,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:45:28,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:45:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:28,303 INFO L87 Difference]: Start difference. First operand 398 states and 488 transitions. Second operand has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:28,686 INFO L93 Difference]: Finished difference Result 413 states and 503 transitions. [2022-11-03 01:45:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:45:28,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-03 01:45:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:28,689 INFO L225 Difference]: With dead ends: 413 [2022-11-03 01:45:28,689 INFO L226 Difference]: Without dead ends: 393 [2022-11-03 01:45:28,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:45:28,690 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 36 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:28,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2907 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-03 01:45:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-11-03 01:45:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 308 states have (on average 1.198051948051948) internal successors, (369), 312 states have internal predecessors, (369), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 52 states have call predecessors, (56), 51 states have call successors, (56) [2022-11-03 01:45:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 481 transitions. [2022-11-03 01:45:28,708 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 481 transitions. Word has length 42 [2022-11-03 01:45:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:28,709 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 481 transitions. [2022-11-03 01:45:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 481 transitions. [2022-11-03 01:45:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 01:45:28,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:28,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-03 01:45:28,711 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash -89850531, now seen corresponding path program 1 times [2022-11-03 01:45:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:28,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75825126] [2022-11-03 01:45:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:28,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:28,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75825126] [2022-11-03 01:45:28,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75825126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:28,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:28,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023027904] [2022-11-03 01:45:28,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:28,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:28,832 INFO L87 Difference]: Start difference. First operand 393 states and 481 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:29,101 INFO L93 Difference]: Finished difference Result 409 states and 497 transitions. [2022-11-03 01:45:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:29,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-03 01:45:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:29,103 INFO L225 Difference]: With dead ends: 409 [2022-11-03 01:45:29,103 INFO L226 Difference]: Without dead ends: 390 [2022-11-03 01:45:29,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:29,104 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 36 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:29,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2025 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-03 01:45:29,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2022-11-03 01:45:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 306 states have (on average 1.196078431372549) internal successors, (366), 310 states have internal predecessors, (366), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-11-03 01:45:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 476 transitions. [2022-11-03 01:45:29,113 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 476 transitions. Word has length 41 [2022-11-03 01:45:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:29,113 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 476 transitions. [2022-11-03 01:45:29,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 476 transitions. [2022-11-03 01:45:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 01:45:29,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:29,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:29,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-03 01:45:29,120 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1817269045, now seen corresponding path program 1 times [2022-11-03 01:45:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:29,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253163216] [2022-11-03 01:45:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:29,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:29,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253163216] [2022-11-03 01:45:29,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253163216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:29,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:29,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790458409] [2022-11-03 01:45:29,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:29,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:29,202 INFO L87 Difference]: Start difference. First operand 390 states and 476 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:29,386 INFO L93 Difference]: Finished difference Result 406 states and 492 transitions. [2022-11-03 01:45:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:29,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-03 01:45:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:29,388 INFO L225 Difference]: With dead ends: 406 [2022-11-03 01:45:29,388 INFO L226 Difference]: Without dead ends: 373 [2022-11-03 01:45:29,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:29,389 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 44 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:29,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1407 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-03 01:45:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-11-03 01:45:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 294 states have (on average 1.1904761904761905) internal successors, (350), 298 states have internal predecessors, (350), 50 states have call successors, (50), 28 states have call predecessors, (50), 28 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2022-11-03 01:45:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 450 transitions. [2022-11-03 01:45:29,396 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 450 transitions. Word has length 41 [2022-11-03 01:45:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:29,397 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 450 transitions. [2022-11-03 01:45:29,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 450 transitions. [2022-11-03 01:45:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 01:45:29,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:29,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:29,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-03 01:45:29,398 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:29,399 INFO L85 PathProgramCache]: Analyzing trace with hash -688966632, now seen corresponding path program 1 times [2022-11-03 01:45:29,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:29,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958193417] [2022-11-03 01:45:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:29,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:29,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958193417] [2022-11-03 01:45:29,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958193417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:29,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:29,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:29,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718951061] [2022-11-03 01:45:29,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:29,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:29,435 INFO L87 Difference]: Start difference. First operand 373 states and 450 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:29,552 INFO L93 Difference]: Finished difference Result 451 states and 545 transitions. [2022-11-03 01:45:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:29,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2022-11-03 01:45:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:29,554 INFO L225 Difference]: With dead ends: 451 [2022-11-03 01:45:29,555 INFO L226 Difference]: Without dead ends: 451 [2022-11-03 01:45:29,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:29,556 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 64 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:29,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 526 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-03 01:45:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 399. [2022-11-03 01:45:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 318 states have (on average 1.1886792452830188) internal successors, (378), 322 states have internal predecessors, (378), 50 states have call successors, (50), 28 states have call predecessors, (50), 30 states have return successors, (52), 48 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-03 01:45:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 480 transitions. [2022-11-03 01:45:29,565 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 480 transitions. Word has length 41 [2022-11-03 01:45:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 480 transitions. [2022-11-03 01:45:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:29,565 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 480 transitions. [2022-11-03 01:45:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:45:29,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:29,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:29,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-03 01:45:29,567 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:29,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1628425127, now seen corresponding path program 1 times [2022-11-03 01:45:29,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:29,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713011536] [2022-11-03 01:45:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:29,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:29,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713011536] [2022-11-03 01:45:29,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713011536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:29,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:29,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85643480] [2022-11-03 01:45:29,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:29,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:29,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:29,673 INFO L87 Difference]: Start difference. First operand 399 states and 480 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:29,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:29,904 INFO L93 Difference]: Finished difference Result 415 states and 496 transitions. [2022-11-03 01:45:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-11-03 01:45:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:29,907 INFO L225 Difference]: With dead ends: 415 [2022-11-03 01:45:29,907 INFO L226 Difference]: Without dead ends: 397 [2022-11-03 01:45:29,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:29,907 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 36 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:29,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1855 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-03 01:45:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2022-11-03 01:45:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 317 states have (on average 1.1861198738170347) internal successors, (376), 321 states have internal predecessors, (376), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (51), 47 states have call predecessors, (51), 44 states have call successors, (51) [2022-11-03 01:45:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 476 transitions. [2022-11-03 01:45:29,916 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 476 transitions. Word has length 42 [2022-11-03 01:45:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:29,916 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 476 transitions. [2022-11-03 01:45:29,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 476 transitions. [2022-11-03 01:45:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:45:29,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:29,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:29,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-03 01:45:29,918 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash 561647146, now seen corresponding path program 1 times [2022-11-03 01:45:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:29,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850648827] [2022-11-03 01:45:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:29,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:29,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:29,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850648827] [2022-11-03 01:45:29,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850648827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:29,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:29,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:29,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249078584] [2022-11-03 01:45:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:29,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:29,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:29,982 INFO L87 Difference]: Start difference. First operand 397 states and 476 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:30,334 INFO L93 Difference]: Finished difference Result 446 states and 535 transitions. [2022-11-03 01:45:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-11-03 01:45:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:30,336 INFO L225 Difference]: With dead ends: 446 [2022-11-03 01:45:30,336 INFO L226 Difference]: Without dead ends: 446 [2022-11-03 01:45:30,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:30,337 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 422 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:30,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 601 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-03 01:45:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 397. [2022-11-03 01:45:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 317 states have (on average 1.1798107255520505) internal successors, (374), 321 states have internal predecessors, (374), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (51), 47 states have call predecessors, (51), 44 states have call successors, (51) [2022-11-03 01:45:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 474 transitions. [2022-11-03 01:45:30,345 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 474 transitions. Word has length 42 [2022-11-03 01:45:30,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:30,345 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 474 transitions. [2022-11-03 01:45:30,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 474 transitions. [2022-11-03 01:45:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 01:45:30,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:30,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:30,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-03 01:45:30,347 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash -408499459, now seen corresponding path program 1 times [2022-11-03 01:45:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:30,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669726688] [2022-11-03 01:45:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:30,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:30,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669726688] [2022-11-03 01:45:30,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669726688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:30,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:30,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297591470] [2022-11-03 01:45:30,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:30,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:30,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:30,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:30,408 INFO L87 Difference]: Start difference. First operand 397 states and 474 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:30,756 INFO L93 Difference]: Finished difference Result 444 states and 532 transitions. [2022-11-03 01:45:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-03 01:45:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:30,759 INFO L225 Difference]: With dead ends: 444 [2022-11-03 01:45:30,759 INFO L226 Difference]: Without dead ends: 444 [2022-11-03 01:45:30,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:30,759 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 413 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:30,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 600 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-03 01:45:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 394. [2022-11-03 01:45:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 314 states have (on average 1.1751592356687899) internal successors, (369), 318 states have internal predecessors, (369), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (51), 47 states have call predecessors, (51), 44 states have call successors, (51) [2022-11-03 01:45:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 469 transitions. [2022-11-03 01:45:30,772 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 469 transitions. Word has length 43 [2022-11-03 01:45:30,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:30,773 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 469 transitions. [2022-11-03 01:45:30,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:30,773 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 469 transitions. [2022-11-03 01:45:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 01:45:30,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:30,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:30,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-03 01:45:30,775 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:30,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash -408222629, now seen corresponding path program 1 times [2022-11-03 01:45:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:30,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252853312] [2022-11-03 01:45:30,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:30,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:31,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:31,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252853312] [2022-11-03 01:45:31,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252853312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:31,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:31,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385805691] [2022-11-03 01:45:31,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:31,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:31,034 INFO L87 Difference]: Start difference. First operand 394 states and 469 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:31,287 INFO L93 Difference]: Finished difference Result 401 states and 475 transitions. [2022-11-03 01:45:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-03 01:45:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:31,289 INFO L225 Difference]: With dead ends: 401 [2022-11-03 01:45:31,289 INFO L226 Difference]: Without dead ends: 384 [2022-11-03 01:45:31,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:31,290 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 58 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:31,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1727 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-03 01:45:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 380. [2022-11-03 01:45:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 301 states have (on average 1.1661129568106312) internal successors, (351), 305 states have internal predecessors, (351), 49 states have call successors, (49), 28 states have call predecessors, (49), 29 states have return successors, (50), 46 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-03 01:45:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 450 transitions. [2022-11-03 01:45:31,298 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 450 transitions. Word has length 43 [2022-11-03 01:45:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:31,298 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 450 transitions. [2022-11-03 01:45:31,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 450 transitions. [2022-11-03 01:45:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 01:45:31,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:31,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:31,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-03 01:45:31,300 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:31,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1831864095, now seen corresponding path program 1 times [2022-11-03 01:45:31,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:31,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164089251] [2022-11-03 01:45:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:31,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:31,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:31,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164089251] [2022-11-03 01:45:31,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164089251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:31,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:31,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:31,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981085969] [2022-11-03 01:45:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:31,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:31,336 INFO L87 Difference]: Start difference. First operand 380 states and 450 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:31,428 INFO L93 Difference]: Finished difference Result 383 states and 447 transitions. [2022-11-03 01:45:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-03 01:45:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:31,430 INFO L225 Difference]: With dead ends: 383 [2022-11-03 01:45:31,430 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 01:45:31,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:31,431 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 24 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:31,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 526 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 01:45:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2022-11-03 01:45:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 300 states have (on average 1.15) internal successors, (345), 304 states have internal predecessors, (345), 49 states have call successors, (49), 28 states have call predecessors, (49), 29 states have return successors, (50), 46 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-03 01:45:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 444 transitions. [2022-11-03 01:45:31,439 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 444 transitions. Word has length 43 [2022-11-03 01:45:31,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:31,439 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 444 transitions. [2022-11-03 01:45:31,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:31,440 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 444 transitions. [2022-11-03 01:45:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:45:31,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:31,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:31,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-03 01:45:31,441 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:31,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2000511447, now seen corresponding path program 1 times [2022-11-03 01:45:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:31,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495532819] [2022-11-03 01:45:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:31,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:31,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495532819] [2022-11-03 01:45:31,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495532819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:31,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:31,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:45:31,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772567041] [2022-11-03 01:45:31,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:31,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:31,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:31,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:31,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:31,680 INFO L87 Difference]: Start difference. First operand 379 states and 444 transitions. Second operand has 10 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:31,992 INFO L93 Difference]: Finished difference Result 389 states and 453 transitions. [2022-11-03 01:45:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:45:31,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-03 01:45:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:31,994 INFO L225 Difference]: With dead ends: 389 [2022-11-03 01:45:31,994 INFO L226 Difference]: Without dead ends: 366 [2022-11-03 01:45:31,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:45:31,994 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 20 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:31,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2251 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-03 01:45:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-11-03 01:45:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 289 states have (on average 1.1487889273356402) internal successors, (332), 293 states have internal predecessors, (332), 47 states have call successors, (47), 28 states have call predecessors, (47), 29 states have return successors, (48), 44 states have call predecessors, (48), 42 states have call successors, (48) [2022-11-03 01:45:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 427 transitions. [2022-11-03 01:45:32,002 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 427 transitions. Word has length 44 [2022-11-03 01:45:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:32,002 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 427 transitions. [2022-11-03 01:45:32,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 427 transitions. [2022-11-03 01:45:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:45:32,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:32,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:32,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-03 01:45:32,004 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash 199208219, now seen corresponding path program 1 times [2022-11-03 01:45:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:32,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638555380] [2022-11-03 01:45:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:32,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:32,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638555380] [2022-11-03 01:45:32,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638555380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:32,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:32,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:32,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862277495] [2022-11-03 01:45:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:32,116 INFO L87 Difference]: Start difference. First operand 366 states and 427 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:45:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:32,321 INFO L93 Difference]: Finished difference Result 382 states and 443 transitions. [2022-11-03 01:45:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-03 01:45:32,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:32,323 INFO L225 Difference]: With dead ends: 382 [2022-11-03 01:45:32,323 INFO L226 Difference]: Without dead ends: 359 [2022-11-03 01:45:32,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:32,324 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 36 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:32,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1730 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-03 01:45:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-11-03 01:45:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 284 states have (on average 1.1443661971830985) internal successors, (325), 288 states have internal predecessors, (325), 45 states have call successors, (45), 28 states have call predecessors, (45), 29 states have return successors, (46), 42 states have call predecessors, (46), 40 states have call successors, (46) [2022-11-03 01:45:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 416 transitions. [2022-11-03 01:45:32,330 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 416 transitions. Word has length 45 [2022-11-03 01:45:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:32,330 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 416 transitions. [2022-11-03 01:45:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:45:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 416 transitions. [2022-11-03 01:45:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:45:32,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:32,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:32,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-03 01:45:32,333 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash 116674451, now seen corresponding path program 1 times [2022-11-03 01:45:32,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:32,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303936993] [2022-11-03 01:45:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:32,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:32,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303936993] [2022-11-03 01:45:32,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303936993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:32,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:32,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909946494] [2022-11-03 01:45:32,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:32,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:32,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:32,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:32,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:32,435 INFO L87 Difference]: Start difference. First operand 359 states and 416 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:32,639 INFO L93 Difference]: Finished difference Result 375 states and 432 transitions. [2022-11-03 01:45:32,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:32,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-03 01:45:32,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:32,641 INFO L225 Difference]: With dead ends: 375 [2022-11-03 01:45:32,641 INFO L226 Difference]: Without dead ends: 354 [2022-11-03 01:45:32,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:32,641 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 36 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:32,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1657 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-03 01:45:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-11-03 01:45:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 280 states have (on average 1.1428571428571428) internal successors, (320), 284 states have internal predecessors, (320), 44 states have call successors, (44), 28 states have call predecessors, (44), 29 states have return successors, (45), 41 states have call predecessors, (45), 39 states have call successors, (45) [2022-11-03 01:45:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 409 transitions. [2022-11-03 01:45:32,648 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 409 transitions. Word has length 44 [2022-11-03 01:45:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:32,648 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 409 transitions. [2022-11-03 01:45:32,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 409 transitions. [2022-11-03 01:45:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:45:32,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:32,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:32,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-03 01:45:32,650 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:32,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1670445258, now seen corresponding path program 1 times [2022-11-03 01:45:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:32,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934467888] [2022-11-03 01:45:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:32,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934467888] [2022-11-03 01:45:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934467888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:32,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:32,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384981042] [2022-11-03 01:45:32,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:32,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:32,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:32,803 INFO L87 Difference]: Start difference. First operand 354 states and 409 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:45:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:33,081 INFO L93 Difference]: Finished difference Result 388 states and 445 transitions. [2022-11-03 01:45:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-11-03 01:45:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:33,083 INFO L225 Difference]: With dead ends: 388 [2022-11-03 01:45:33,083 INFO L226 Difference]: Without dead ends: 373 [2022-11-03 01:45:33,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:33,084 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 55 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:33,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1845 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:33,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-03 01:45:33,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 352. [2022-11-03 01:45:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 279 states have (on average 1.1397849462365592) internal successors, (318), 283 states have internal predecessors, (318), 43 states have call successors, (43), 28 states have call predecessors, (43), 29 states have return successors, (44), 40 states have call predecessors, (44), 38 states have call successors, (44) [2022-11-03 01:45:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 405 transitions. [2022-11-03 01:45:33,090 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 405 transitions. Word has length 47 [2022-11-03 01:45:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:33,090 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 405 transitions. [2022-11-03 01:45:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:45:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 405 transitions. [2022-11-03 01:45:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:45:33,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:33,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:33,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-03 01:45:33,092 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:33,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1593028133, now seen corresponding path program 1 times [2022-11-03 01:45:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:33,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369014015] [2022-11-03 01:45:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:33,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:33,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369014015] [2022-11-03 01:45:33,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369014015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:33,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:33,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:45:33,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589025627] [2022-11-03 01:45:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:33,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:45:33,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:45:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:33,230 INFO L87 Difference]: Start difference. First operand 352 states and 405 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:45:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:33,459 INFO L93 Difference]: Finished difference Result 368 states and 421 transitions. [2022-11-03 01:45:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-11-03 01:45:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:33,460 INFO L225 Difference]: With dead ends: 368 [2022-11-03 01:45:33,461 INFO L226 Difference]: Without dead ends: 344 [2022-11-03 01:45:33,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:45:33,461 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 37 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:33,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1791 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-03 01:45:33,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-11-03 01:45:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.1355311355311355) internal successors, (310), 277 states have internal predecessors, (310), 41 states have call successors, (41), 28 states have call predecessors, (41), 29 states have return successors, (42), 38 states have call predecessors, (42), 36 states have call successors, (42) [2022-11-03 01:45:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 393 transitions. [2022-11-03 01:45:33,467 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 393 transitions. Word has length 47 [2022-11-03 01:45:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:33,468 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 393 transitions. [2022-11-03 01:45:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:45:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 393 transitions. [2022-11-03 01:45:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 01:45:33,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:33,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:33,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-03 01:45:33,469 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1783314124, now seen corresponding path program 1 times [2022-11-03 01:45:33,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:33,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397313737] [2022-11-03 01:45:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:33,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:33,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:33,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397313737] [2022-11-03 01:45:33,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397313737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:33,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:33,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:45:33,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843378434] [2022-11-03 01:45:33,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:33,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:33,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:33,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:33,654 INFO L87 Difference]: Start difference. First operand 344 states and 393 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:34,127 INFO L93 Difference]: Finished difference Result 321 states and 362 transitions. [2022-11-03 01:45:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:34,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2022-11-03 01:45:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:34,129 INFO L225 Difference]: With dead ends: 321 [2022-11-03 01:45:34,129 INFO L226 Difference]: Without dead ends: 316 [2022-11-03 01:45:34,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:45:34,129 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 224 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:34,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1100 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-03 01:45:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 300. [2022-11-03 01:45:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 236 states have (on average 1.13135593220339) internal successors, (267), 239 states have internal predecessors, (267), 38 states have call successors, (38), 27 states have call predecessors, (38), 25 states have return successors, (37), 33 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-03 01:45:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 342 transitions. [2022-11-03 01:45:34,136 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 342 transitions. Word has length 46 [2022-11-03 01:45:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:34,136 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 342 transitions. [2022-11-03 01:45:34,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:45:34,137 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 342 transitions. [2022-11-03 01:45:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:45:34,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:34,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:34,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-03 01:45:34,138 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash -584752547, now seen corresponding path program 1 times [2022-11-03 01:45:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:34,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826003421] [2022-11-03 01:45:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:34,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:45:34,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:45:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:45:34,224 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:45:34,224 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:45:34,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-11-03 01:45:34,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-11-03 01:45:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-03 01:45:34,232 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:34,236 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:45:34,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:45:34 BoogieIcfgContainer [2022-11-03 01:45:34,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:45:34,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:45:34,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:45:34,326 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:45:34,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:07" (3/4) ... [2022-11-03 01:45:34,330 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:45:34,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:45:34,330 INFO L158 Benchmark]: Toolchain (without parser) took 29692.13ms. Allocated memory was 102.8MB in the beginning and 318.8MB in the end (delta: 216.0MB). Free memory was 56.5MB in the beginning and 112.8MB in the end (delta: -56.3MB). Peak memory consumption was 159.4MB. Max. memory is 16.1GB. [2022-11-03 01:45:34,330 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 75.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:45:34,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.15ms. Allocated memory is still 102.8MB. Free memory was 56.3MB in the beginning and 58.3MB in the end (delta: -2.0MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-11-03 01:45:34,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.32ms. Allocated memory is still 102.8MB. Free memory was 58.1MB in the beginning and 51.2MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:45:34,331 INFO L158 Benchmark]: Boogie Preprocessor took 122.27ms. Allocated memory is still 102.8MB. Free memory was 51.2MB in the beginning and 45.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 01:45:34,332 INFO L158 Benchmark]: RCFGBuilder took 1952.69ms. Allocated memory was 102.8MB in the beginning and 174.1MB in the end (delta: 71.3MB). Free memory was 45.9MB in the beginning and 133.3MB in the end (delta: -87.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-11-03 01:45:34,332 INFO L158 Benchmark]: TraceAbstraction took 26856.66ms. Allocated memory was 174.1MB in the beginning and 318.8MB in the end (delta: 144.7MB). Free memory was 132.2MB in the beginning and 112.8MB in the end (delta: 19.4MB). Peak memory consumption was 163.1MB. Max. memory is 16.1GB. [2022-11-03 01:45:34,332 INFO L158 Benchmark]: Witness Printer took 4.24ms. Allocated memory is still 318.8MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:45:34,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 75.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.15ms. Allocated memory is still 102.8MB. Free memory was 56.3MB in the beginning and 58.3MB in the end (delta: -2.0MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.32ms. Allocated memory is still 102.8MB. Free memory was 58.1MB in the beginning and 51.2MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 122.27ms. Allocated memory is still 102.8MB. Free memory was 51.2MB in the beginning and 45.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1952.69ms. Allocated memory was 102.8MB in the beginning and 174.1MB in the end (delta: 71.3MB). Free memory was 45.9MB in the beginning and 133.3MB in the end (delta: -87.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * TraceAbstraction took 26856.66ms. Allocated memory was 174.1MB in the beginning and 318.8MB in the end (delta: 144.7MB). Free memory was 132.2MB in the beginning and 112.8MB in the end (delta: 19.4MB). Peak memory consumption was 163.1MB. Max. memory is 16.1GB. * Witness Printer took 4.24ms. Allocated memory is still 318.8MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 59. Possible FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp [L1755] CALL _BLAST_init() [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 [L1755] RET _BLAST_init() [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 [L1767] COND FALSE !(irp_choice == 0) [L1772] CALL stub_driver_init() [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr [L1772] RET stub_driver_init() [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(Context)=-2, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(Context)=-2, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-2, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(Context)=-2, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-2, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND TRUE myStatus >= 0 [L1584] CALL HpCdrProcessLastSession(Irp__AssociatedIrp__SystemBuffer) [L1559] int index = __VERIFIER_nondet_int() ; [L1562] COND TRUE \read(index) [L1563] index -- [L1584] RET HpCdrProcessLastSession(Irp__AssociatedIrp__SystemBuffer) [L1587] return (myStatus); [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=0, compFptr=0, compRegistered=1, compRetStatus=0, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=0, compFptr=0, compRegistered=1, compRetStatus=0, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND FALSE !(tmp_ndt_4 == 0) [L1936] int tmp_ndt_5; [L1937] tmp_ndt_5 = __VERIFIER_nondet_int() [L1938] COND TRUE tmp_ndt_5 == 1 [L1947] returnVal2 = -1073741823 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=0, compFptr=0, compRegistered=1, compRetStatus=0, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, returnVal2=-1073741823, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=-1, tmp_ndt_5=1, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=0, compFptr=0, compRegistered=1, compRetStatus=0, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-2, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, returnVal2=-1073741823, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=-1, tmp_ndt_5=1, UNLOADED=0] [L1981] return (returnVal2); [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=-1073741823, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=-1073741823, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=-1073741823, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND TRUE \read(we_should_unload) [L1821] FCALL CdAudioUnload(d) [L1825] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1826] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1833] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1834] COND FALSE !(s == MPR3) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1841] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1842] COND TRUE status != -1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1843] COND TRUE s != SKIP2 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1844] COND FALSE !(s != IPC) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1857] COND FALSE !(pended != 1) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1869] COND TRUE status != 259 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=-1073741823, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1871] CALL errorFn() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - UnprovableResult [Line: 1717]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 351 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 26.7s, OverallIterations: 61, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9007 SdHoareTripleChecker+Valid, 15.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8775 mSDsluCounter, 91563 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79987 mSDsCounter, 645 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19390 IncrementalHoareTripleChecker+Invalid, 20035 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 645 mSolverCounterUnsat, 21570 mSDtfsCounter, 19390 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 484 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=757occurred in iteration=12, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 60 MinimizatonAttempts, 924 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 2031 NumberOfCodeBlocks, 2031 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 1926 ConstructedInterpolants, 0 QuantifiedInterpolants, 5309 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 60 InterpolantComputations, 60 PerfectInterpolantSequences, 7/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 01:45:34,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:36,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:36,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:36,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:36,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:36,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:36,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:36,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:36,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:36,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:36,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:36,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:36,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:36,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:36,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:36,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:36,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:36,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:36,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:36,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:36,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:36,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:36,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:36,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:36,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:36,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:36,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:36,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:36,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:36,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:36,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:36,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:36,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:36,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:36,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:36,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:36,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:36,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:36,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:36,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:36,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:36,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-03 01:45:36,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:36,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:36,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:36,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:36,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:36,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:36,871 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:36,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:36,871 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:36,871 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:36,872 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:36,872 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:36,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 01:45:36,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 01:45:36,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:36,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:45:36,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:45:36,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:45:36,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:45:36,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:36,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 01:45:36,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 01:45:36,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 01:45:36,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:36,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:45:36,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:45:36,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:45:36,877 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:45:36,877 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:36,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:36,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:45:36,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:36,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:36,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:36,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:36,880 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:45:36,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:45:36,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:36,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:45:36,880 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2022-11-03 01:45:37,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:37,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:37,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:37,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:37,243 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:37,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-11-03 01:45:37,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/f3b6d0ff7/f3c45f7749744fcea437758233a2fe36/FLAGac04ed863 [2022-11-03 01:45:38,005 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:38,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-11-03 01:45:38,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/f3b6d0ff7/f3c45f7749744fcea437758233a2fe36/FLAGac04ed863 [2022-11-03 01:45:38,235 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/data/f3b6d0ff7/f3c45f7749744fcea437758233a2fe36 [2022-11-03 01:45:38,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:38,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:38,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:38,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:38,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:38,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:38,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5dca35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38, skipping insertion in model container [2022-11-03 01:45:38,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:38,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:38,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:38,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-11-03 01:45:38,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:38,759 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:38,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2022-11-03 01:45:38,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:38,924 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:38,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38 WrapperNode [2022-11-03 01:45:38,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:38,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:38,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:38,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:38,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:38,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,020 INFO L138 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1444 [2022-11-03 01:45:39,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:39,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:39,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:39,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:39,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:39,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:39,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:39,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:39,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (1/1) ... [2022-11-03 01:45:39,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:39,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:39,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:39,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-11-03 01:45:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-11-03 01:45:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-11-03 01:45:39,180 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-11-03 01:45:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 01:45:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-03 01:45:39,180 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-03 01:45:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-11-03 01:45:39,180 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-11-03 01:45:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-11-03 01:45:39,181 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-11-03 01:45:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-03 01:45:39,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-03 01:45:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-11-03 01:45:39,181 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-11-03 01:45:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-11-03 01:45:39,182 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-11-03 01:45:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-11-03 01:45:39,182 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-11-03 01:45:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-03 01:45:39,182 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-03 01:45:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-03 01:45:39,183 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-03 01:45:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-11-03 01:45:39,183 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-11-03 01:45:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:39,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-11-03 01:45:39,184 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-11-03 01:45:39,565 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:39,567 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:45:39,753 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,838 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-11-03 01:45:39,838 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-11-03 01:45:39,896 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,918 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-11-03 01:45:39,918 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-11-03 01:45:39,926 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,927 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,930 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,940 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,961 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,977 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:39,991 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:45:40,784 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0bv32; [2022-11-03 01:45:40,785 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2022-11-03 01:45:40,785 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2022-11-03 01:45:40,786 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2022-11-03 01:45:40,786 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2022-11-03 01:45:40,786 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2022-11-03 01:45:40,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2022-11-03 01:45:40,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2022-11-03 01:45:40,788 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2022-11-03 01:45:40,788 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2022-11-03 01:45:40,788 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2022-11-03 01:45:40,788 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-11-03 01:45:40,789 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-11-03 01:45:40,789 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2022-11-03 01:45:40,790 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2022-11-03 01:45:40,852 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:45:40,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:45:40,863 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:45:40,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:40 BoogieIcfgContainer [2022-11-03 01:45:40,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:45:40,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:45:40,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:45:40,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:45:40,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:38" (1/3) ... [2022-11-03 01:45:40,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc987f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:40, skipping insertion in model container [2022-11-03 01:45:40,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:38" (2/3) ... [2022-11-03 01:45:40,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc987f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:40, skipping insertion in model container [2022-11-03 01:45:40,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:40" (3/3) ... [2022-11-03 01:45:40,876 INFO L112 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2022-11-03 01:45:40,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:45:40,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 01:45:40,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:45:40,959 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a8b59b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:45:40,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 01:45:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-03 01:45:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:45:40,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:40,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:40,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:40,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:40,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2107937846, now seen corresponding path program 1 times [2022-11-03 01:45:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:40,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558705074] [2022-11-03 01:45:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:40,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:40,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:40,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:41,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:45:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:41,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:41,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:41,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:41,236 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558705074] [2022-11-03 01:45:41,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558705074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:41,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:41,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465599137] [2022-11-03 01:45:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:41,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:41,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:41,322 INFO L87 Difference]: Start difference. First operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:41,487 INFO L93 Difference]: Finished difference Result 623 states and 925 transitions. [2022-11-03 01:45:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:45:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:41,504 INFO L225 Difference]: With dead ends: 623 [2022-11-03 01:45:41,505 INFO L226 Difference]: Without dead ends: 619 [2022-11-03 01:45:41,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:41,510 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 690 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:41,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 952 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-03 01:45:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 603. [2022-11-03 01:45:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.4732510288065843) internal successors, (716), 494 states have internal predecessors, (716), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-11-03 01:45:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 904 transitions. [2022-11-03 01:45:41,621 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 904 transitions. Word has length 8 [2022-11-03 01:45:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:41,621 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 904 transitions. [2022-11-03 01:45:41,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 904 transitions. [2022-11-03 01:45:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:45:41,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:41,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:41,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:41,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:41,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1313128955, now seen corresponding path program 1 times [2022-11-03 01:45:41,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:41,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826694939] [2022-11-03 01:45:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:41,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:41,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:41,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:45:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:41,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:41,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:42,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:42,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:42,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826694939] [2022-11-03 01:45:42,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826694939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:42,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:42,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177102734] [2022-11-03 01:45:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:42,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:42,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:42,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:42,040 INFO L87 Difference]: Start difference. First operand 603 states and 904 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:42,104 INFO L93 Difference]: Finished difference Result 606 states and 905 transitions. [2022-11-03 01:45:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:42,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:45:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:42,112 INFO L225 Difference]: With dead ends: 606 [2022-11-03 01:45:42,112 INFO L226 Difference]: Without dead ends: 606 [2022-11-03 01:45:42,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:42,114 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 385 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:42,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 946 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-11-03 01:45:42,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 603. [2022-11-03 01:45:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.47119341563786) internal successors, (715), 494 states have internal predecessors, (715), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-11-03 01:45:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 903 transitions. [2022-11-03 01:45:42,184 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 903 transitions. Word has length 9 [2022-11-03 01:45:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:42,185 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 903 transitions. [2022-11-03 01:45:42,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 903 transitions. [2022-11-03 01:45:42,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:45:42,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:42,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:42,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:42,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:42,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:42,399 INFO L85 PathProgramCache]: Analyzing trace with hash 929457737, now seen corresponding path program 1 times [2022-11-03 01:45:42,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:42,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274808460] [2022-11-03 01:45:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:42,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:42,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:42,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:42,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:45:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:42,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:42,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:42,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:42,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:42,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274808460] [2022-11-03 01:45:42,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274808460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:42,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:42,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868189554] [2022-11-03 01:45:42,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:42,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:42,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:42,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:42,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:42,575 INFO L87 Difference]: Start difference. First operand 603 states and 903 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:42,717 INFO L93 Difference]: Finished difference Result 602 states and 902 transitions. [2022-11-03 01:45:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:42,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:45:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:42,724 INFO L225 Difference]: With dead ends: 602 [2022-11-03 01:45:42,724 INFO L226 Difference]: Without dead ends: 599 [2022-11-03 01:45:42,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:42,727 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 418 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:42,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 850 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-03 01:45:42,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-11-03 01:45:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.453416149068323) internal successors, (702), 490 states have internal predecessors, (702), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-11-03 01:45:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 890 transitions. [2022-11-03 01:45:42,769 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 890 transitions. Word has length 9 [2022-11-03 01:45:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:42,770 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 890 transitions. [2022-11-03 01:45:42,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:42,770 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 890 transitions. [2022-11-03 01:45:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:45:42,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:42,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:42,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:42,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:42,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618489, now seen corresponding path program 1 times [2022-11-03 01:45:42,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:42,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303808418] [2022-11-03 01:45:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:42,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:42,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:42,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:42,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:45:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:43,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:43,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:43,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:43,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:43,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303808418] [2022-11-03 01:45:43,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303808418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:43,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:43,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383547025] [2022-11-03 01:45:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:43,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:43,144 INFO L87 Difference]: Start difference. First operand 599 states and 890 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:43,231 INFO L93 Difference]: Finished difference Result 602 states and 892 transitions. [2022-11-03 01:45:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:43,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:45:43,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:43,235 INFO L225 Difference]: With dead ends: 602 [2022-11-03 01:45:43,235 INFO L226 Difference]: Without dead ends: 599 [2022-11-03 01:45:43,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:43,236 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 0 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:43,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1335 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-03 01:45:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-11-03 01:45:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.4513457556935818) internal successors, (701), 490 states have internal predecessors, (701), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2022-11-03 01:45:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 889 transitions. [2022-11-03 01:45:43,257 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 889 transitions. Word has length 13 [2022-11-03 01:45:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:43,257 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 889 transitions. [2022-11-03 01:45:43,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 889 transitions. [2022-11-03 01:45:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:43,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:43,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:43,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:43,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:43,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839809, now seen corresponding path program 1 times [2022-11-03 01:45:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:43,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24183682] [2022-11-03 01:45:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:43,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:43,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:43,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 01:45:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:43,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:43,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:43,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:43,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:43,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24183682] [2022-11-03 01:45:43,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24183682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:43,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:43,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987787930] [2022-11-03 01:45:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:43,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:43,652 INFO L87 Difference]: Start difference. First operand 599 states and 889 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:43,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:43,887 INFO L93 Difference]: Finished difference Result 851 states and 1244 transitions. [2022-11-03 01:45:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:43,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:45:43,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:43,894 INFO L225 Difference]: With dead ends: 851 [2022-11-03 01:45:43,894 INFO L226 Difference]: Without dead ends: 850 [2022-11-03 01:45:43,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:43,895 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 567 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:43,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1049 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-03 01:45:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 799. [2022-11-03 01:45:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 656 states have (on average 1.4222560975609757) internal successors, (933), 649 states have internal predecessors, (933), 107 states have call successors, (107), 31 states have call predecessors, (107), 35 states have return successors, (136), 122 states have call predecessors, (136), 96 states have call successors, (136) [2022-11-03 01:45:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1176 transitions. [2022-11-03 01:45:43,925 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1176 transitions. Word has length 15 [2022-11-03 01:45:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:43,926 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1176 transitions. [2022-11-03 01:45:43,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1176 transitions. [2022-11-03 01:45:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 01:45:43,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:43,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:43,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:44,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:44,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1930286977, now seen corresponding path program 1 times [2022-11-03 01:45:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:44,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78122399] [2022-11-03 01:45:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:44,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:44,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:44,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:44,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 01:45:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:44,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:45:44,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:44,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:44,350 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:44,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78122399] [2022-11-03 01:45:44,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78122399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:44,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:44,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676552023] [2022-11-03 01:45:44,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:44,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:44,353 INFO L87 Difference]: Start difference. First operand 799 states and 1176 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:44,416 INFO L93 Difference]: Finished difference Result 875 states and 1272 transitions. [2022-11-03 01:45:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:44,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 01:45:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:44,421 INFO L225 Difference]: With dead ends: 875 [2022-11-03 01:45:44,422 INFO L226 Difference]: Without dead ends: 875 [2022-11-03 01:45:44,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:44,427 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 601 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:44,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 870 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-03 01:45:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 847. [2022-11-03 01:45:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 699 states have (on average 1.4406294706723892) internal successors, (1007), 703 states have internal predecessors, (1007), 106 states have call successors, (106), 35 states have call predecessors, (106), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2022-11-03 01:45:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1240 transitions. [2022-11-03 01:45:44,471 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1240 transitions. Word has length 19 [2022-11-03 01:45:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:44,471 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1240 transitions. [2022-11-03 01:45:44,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1240 transitions. [2022-11-03 01:45:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:45:44,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:44,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:44,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:44,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:44,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:44,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1396316142, now seen corresponding path program 1 times [2022-11-03 01:45:44,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:44,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738737932] [2022-11-03 01:45:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:44,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:44,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:44,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:45:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:44,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:45:44,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:45,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:45,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:45,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738737932] [2022-11-03 01:45:45,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738737932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:45,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:45,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:45,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113878681] [2022-11-03 01:45:45,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:45,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:45,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:45,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:45,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:45,011 INFO L87 Difference]: Start difference. First operand 847 states and 1240 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:45,672 INFO L93 Difference]: Finished difference Result 894 states and 1294 transitions. [2022-11-03 01:45:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:45,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 01:45:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:45,677 INFO L225 Difference]: With dead ends: 894 [2022-11-03 01:45:45,678 INFO L226 Difference]: Without dead ends: 894 [2022-11-03 01:45:45,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:45,679 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1028 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:45,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 875 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:45:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-11-03 01:45:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 844. [2022-11-03 01:45:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 696 states have (on average 1.4295977011494252) internal successors, (995), 700 states have internal predecessors, (995), 106 states have call successors, (106), 35 states have call predecessors, (106), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2022-11-03 01:45:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1228 transitions. [2022-11-03 01:45:45,707 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1228 transitions. Word has length 21 [2022-11-03 01:45:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:45,707 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1228 transitions. [2022-11-03 01:45:45,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1228 transitions. [2022-11-03 01:45:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:45:45,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:45,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:45,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:45,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:45,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -401986427, now seen corresponding path program 1 times [2022-11-03 01:45:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:45,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532915136] [2022-11-03 01:45:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:45,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:45,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:45,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 01:45:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:46,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:46,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:46,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:46,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:46,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532915136] [2022-11-03 01:45:46,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532915136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:46,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:46,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:46,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050402066] [2022-11-03 01:45:46,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:46,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:46,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:46,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:46,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:46,085 INFO L87 Difference]: Start difference. First operand 844 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:46,171 INFO L93 Difference]: Finished difference Result 843 states and 1225 transitions. [2022-11-03 01:45:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:46,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-03 01:45:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:46,175 INFO L225 Difference]: With dead ends: 843 [2022-11-03 01:45:46,176 INFO L226 Difference]: Without dead ends: 843 [2022-11-03 01:45:46,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:46,176 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 22 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:46,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1254 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-03 01:45:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-11-03 01:45:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 696 states have (on average 1.4267241379310345) internal successors, (993), 699 states have internal predecessors, (993), 105 states have call successors, (105), 35 states have call predecessors, (105), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2022-11-03 01:45:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1225 transitions. [2022-11-03 01:45:46,201 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1225 transitions. Word has length 23 [2022-11-03 01:45:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:46,202 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1225 transitions. [2022-11-03 01:45:46,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1225 transitions. [2022-11-03 01:45:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:45:46,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:46,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:46,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:46,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:46,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash -607443031, now seen corresponding path program 1 times [2022-11-03 01:45:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:46,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890014565] [2022-11-03 01:45:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:46,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:46,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:46,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:46,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 01:45:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:46,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:46,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:46,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:46,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:46,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890014565] [2022-11-03 01:45:46,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890014565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:46,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:46,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742780833] [2022-11-03 01:45:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:46,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:46,606 INFO L87 Difference]: Start difference. First operand 843 states and 1225 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:46,633 INFO L93 Difference]: Finished difference Result 761 states and 1092 transitions. [2022-11-03 01:45:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:46,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-11-03 01:45:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:46,636 INFO L225 Difference]: With dead ends: 761 [2022-11-03 01:45:46,637 INFO L226 Difference]: Without dead ends: 761 [2022-11-03 01:45:46,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:46,638 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 186 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:46,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1263 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-11-03 01:45:46,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 736. [2022-11-03 01:45:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 606 states have (on average 1.4207920792079207) internal successors, (861), 609 states have internal predecessors, (861), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (107), 96 states have call predecessors, (107), 88 states have call successors, (107) [2022-11-03 01:45:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1063 transitions. [2022-11-03 01:45:46,657 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1063 transitions. Word has length 35 [2022-11-03 01:45:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:46,658 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1063 transitions. [2022-11-03 01:45:46,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1063 transitions. [2022-11-03 01:45:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:45:46,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:46,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:46,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:46,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1380818810, now seen corresponding path program 1 times [2022-11-03 01:45:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:46,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344804468] [2022-11-03 01:45:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:46,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:46,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:46,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 01:45:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:47,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:47,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:47,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:47,070 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:47,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344804468] [2022-11-03 01:45:47,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344804468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:47,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:47,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:47,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455429701] [2022-11-03 01:45:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:47,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:47,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:47,073 INFO L87 Difference]: Start difference. First operand 736 states and 1063 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:47,107 INFO L93 Difference]: Finished difference Result 667 states and 953 transitions. [2022-11-03 01:45:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-11-03 01:45:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:47,111 INFO L225 Difference]: With dead ends: 667 [2022-11-03 01:45:47,111 INFO L226 Difference]: Without dead ends: 667 [2022-11-03 01:45:47,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:47,112 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 159 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:47,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1313 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-03 01:45:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 640. [2022-11-03 01:45:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 528 states have (on average 1.4204545454545454) internal successors, (750), 534 states have internal predecessors, (750), 84 states have call successors, (84), 24 states have call predecessors, (84), 27 states have return successors, (88), 81 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 922 transitions. [2022-11-03 01:45:47,132 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 922 transitions. Word has length 35 [2022-11-03 01:45:47,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:47,133 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 922 transitions. [2022-11-03 01:45:47,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:47,134 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 922 transitions. [2022-11-03 01:45:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:45:47,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:47,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:47,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:47,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:47,349 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:47,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894010, now seen corresponding path program 1 times [2022-11-03 01:45:47,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:47,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265704438] [2022-11-03 01:45:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:47,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:47,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:47,351 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:47,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 01:45:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:47,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:45:47,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:47,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:47,587 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:47,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265704438] [2022-11-03 01:45:47,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265704438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:47,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:47,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:47,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252605821] [2022-11-03 01:45:47,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:47,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:47,590 INFO L87 Difference]: Start difference. First operand 640 states and 922 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:48,049 INFO L93 Difference]: Finished difference Result 640 states and 920 transitions. [2022-11-03 01:45:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:48,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-03 01:45:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:48,052 INFO L225 Difference]: With dead ends: 640 [2022-11-03 01:45:48,053 INFO L226 Difference]: Without dead ends: 640 [2022-11-03 01:45:48,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:48,053 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 681 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:48,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1096 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-11-03 01:45:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-11-03 01:45:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 528 states have (on average 1.4166666666666667) internal successors, (748), 534 states have internal predecessors, (748), 84 states have call successors, (84), 24 states have call predecessors, (84), 27 states have return successors, (88), 81 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 920 transitions. [2022-11-03 01:45:48,088 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 920 transitions. Word has length 32 [2022-11-03 01:45:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:48,088 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 920 transitions. [2022-11-03 01:45:48,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 920 transitions. [2022-11-03 01:45:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:48,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:48,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:48,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:48,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:48,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:48,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1030908419, now seen corresponding path program 1 times [2022-11-03 01:45:48,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:48,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243673409] [2022-11-03 01:45:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:48,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:48,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:48,305 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:48,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 01:45:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:48,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:48,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:48,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:48,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:48,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243673409] [2022-11-03 01:45:48,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243673409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:48,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:48,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573351434] [2022-11-03 01:45:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:48,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:48,460 INFO L87 Difference]: Start difference. First operand 640 states and 920 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:48,482 INFO L93 Difference]: Finished difference Result 659 states and 939 transitions. [2022-11-03 01:45:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:48,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-03 01:45:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:48,486 INFO L225 Difference]: With dead ends: 659 [2022-11-03 01:45:48,486 INFO L226 Difference]: Without dead ends: 659 [2022-11-03 01:45:48,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:48,488 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 569 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:48,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 817 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-03 01:45:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 639. [2022-11-03 01:45:48,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 527 states have (on average 1.413662239089184) internal successors, (745), 533 states have internal predecessors, (745), 84 states have call successors, (84), 24 states have call predecessors, (84), 27 states have return successors, (86), 81 states have call predecessors, (86), 77 states have call successors, (86) [2022-11-03 01:45:48,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 915 transitions. [2022-11-03 01:45:48,509 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 915 transitions. Word has length 36 [2022-11-03 01:45:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:48,510 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 915 transitions. [2022-11-03 01:45:48,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:48,510 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 915 transitions. [2022-11-03 01:45:48,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:45:48,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:48,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:48,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:48,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:48,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash 138802049, now seen corresponding path program 1 times [2022-11-03 01:45:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:48,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060702002] [2022-11-03 01:45:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:48,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:48,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:48,727 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:48,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 01:45:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:48,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:48,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:48,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:48,885 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:48,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060702002] [2022-11-03 01:45:48,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060702002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:48,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:48,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:48,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767628688] [2022-11-03 01:45:48,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:48,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:48,887 INFO L87 Difference]: Start difference. First operand 639 states and 915 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:48,985 INFO L93 Difference]: Finished difference Result 767 states and 1086 transitions. [2022-11-03 01:45:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:48,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-03 01:45:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:48,990 INFO L225 Difference]: With dead ends: 767 [2022-11-03 01:45:48,990 INFO L226 Difference]: Without dead ends: 767 [2022-11-03 01:45:48,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:48,991 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 135 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:48,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1365 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-03 01:45:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 690. [2022-11-03 01:45:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 574 states have (on average 1.386759581881533) internal successors, (796), 573 states have internal predecessors, (796), 84 states have call successors, (84), 24 states have call predecessors, (84), 31 states have return successors, (97), 92 states have call predecessors, (97), 77 states have call successors, (97) [2022-11-03 01:45:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 977 transitions. [2022-11-03 01:45:49,008 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 977 transitions. Word has length 34 [2022-11-03 01:45:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:49,009 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 977 transitions. [2022-11-03 01:45:49,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 977 transitions. [2022-11-03 01:45:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:45:49,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:49,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:49,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:49,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:49,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:49,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash -298326081, now seen corresponding path program 1 times [2022-11-03 01:45:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:49,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280839873] [2022-11-03 01:45:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:49,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:49,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:49,225 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:49,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 01:45:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:49,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:45:49,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:49,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:49,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280839873] [2022-11-03 01:45:49,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280839873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:49,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:49,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50955447] [2022-11-03 01:45:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:49,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:49,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:49,497 INFO L87 Difference]: Start difference. First operand 690 states and 977 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:49,948 INFO L93 Difference]: Finished difference Result 671 states and 947 transitions. [2022-11-03 01:45:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-03 01:45:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:49,952 INFO L225 Difference]: With dead ends: 671 [2022-11-03 01:45:49,952 INFO L226 Difference]: Without dead ends: 671 [2022-11-03 01:45:49,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:49,953 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 673 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:49,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1104 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-03 01:45:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2022-11-03 01:45:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 557 states have (on average 1.3913824057450628) internal successors, (775), 563 states have internal predecessors, (775), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 947 transitions. [2022-11-03 01:45:49,970 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 947 transitions. Word has length 34 [2022-11-03 01:45:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:49,971 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 947 transitions. [2022-11-03 01:45:49,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 947 transitions. [2022-11-03 01:45:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:45:49,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:49,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:49,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:50,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:50,185 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:50,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash 452395651, now seen corresponding path program 1 times [2022-11-03 01:45:50,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:50,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583281749] [2022-11-03 01:45:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:50,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:50,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:50,190 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:50,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 01:45:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:50,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:45:50,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:50,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:50,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:50,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583281749] [2022-11-03 01:45:50,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583281749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:50,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:50,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127125886] [2022-11-03 01:45:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:50,504 INFO L87 Difference]: Start difference. First operand 671 states and 947 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:51,017 INFO L93 Difference]: Finished difference Result 746 states and 1053 transitions. [2022-11-03 01:45:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:51,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-03 01:45:51,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:51,022 INFO L225 Difference]: With dead ends: 746 [2022-11-03 01:45:51,022 INFO L226 Difference]: Without dead ends: 746 [2022-11-03 01:45:51,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:51,023 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 757 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:51,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1184 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:45:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-03 01:45:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 674. [2022-11-03 01:45:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 560 states have (on average 1.3910714285714285) internal successors, (779), 566 states have internal predecessors, (779), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 951 transitions. [2022-11-03 01:45:51,041 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 951 transitions. Word has length 35 [2022-11-03 01:45:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:51,041 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 951 transitions. [2022-11-03 01:45:51,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 951 transitions. [2022-11-03 01:45:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:45:51,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:51,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:51,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:51,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash 452672481, now seen corresponding path program 1 times [2022-11-03 01:45:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:51,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675215916] [2022-11-03 01:45:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:51,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:51,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:51,262 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:51,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 01:45:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:51,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:45:51,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:51,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:51,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675215916] [2022-11-03 01:45:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675215916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:51,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:51,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:51,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056674081] [2022-11-03 01:45:51,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:51,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:51,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:51,498 INFO L87 Difference]: Start difference. First operand 674 states and 951 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:51,642 INFO L93 Difference]: Finished difference Result 690 states and 967 transitions. [2022-11-03 01:45:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:51,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-03 01:45:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:51,645 INFO L225 Difference]: With dead ends: 690 [2022-11-03 01:45:51,645 INFO L226 Difference]: Without dead ends: 673 [2022-11-03 01:45:51,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:51,646 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 52 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:51,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3220 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-03 01:45:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2022-11-03 01:45:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 559 states have (on average 1.3899821109123434) internal successors, (777), 565 states have internal predecessors, (777), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 949 transitions. [2022-11-03 01:45:51,664 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 949 transitions. Word has length 35 [2022-11-03 01:45:51,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:51,665 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 949 transitions. [2022-11-03 01:45:51,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 949 transitions. [2022-11-03 01:45:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 01:45:51,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:51,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:51,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:51,885 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2080196380, now seen corresponding path program 1 times [2022-11-03 01:45:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:51,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807439673] [2022-11-03 01:45:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:51,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:51,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:51,887 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:51,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 01:45:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:52,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:45:52,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:52,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:52,059 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:52,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807439673] [2022-11-03 01:45:52,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807439673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:52,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:52,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:52,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179005903] [2022-11-03 01:45:52,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:52,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:52,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:52,062 INFO L87 Difference]: Start difference. First operand 673 states and 949 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:52,167 INFO L93 Difference]: Finished difference Result 699 states and 981 transitions. [2022-11-03 01:45:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:52,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-03 01:45:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:52,171 INFO L225 Difference]: With dead ends: 699 [2022-11-03 01:45:52,171 INFO L226 Difference]: Without dead ends: 699 [2022-11-03 01:45:52,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:52,172 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 49 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:52,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1897 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-03 01:45:52,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 675. [2022-11-03 01:45:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 561 states have (on average 1.3885918003565063) internal successors, (779), 567 states have internal predecessors, (779), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 951 transitions. [2022-11-03 01:45:52,188 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 951 transitions. Word has length 37 [2022-11-03 01:45:52,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:52,189 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 951 transitions. [2022-11-03 01:45:52,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 951 transitions. [2022-11-03 01:45:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 01:45:52,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:52,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:52,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:52,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:52,403 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1792069090, now seen corresponding path program 1 times [2022-11-03 01:45:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:52,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854404553] [2022-11-03 01:45:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:52,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:52,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:52,405 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:52,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 01:45:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:52,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:52,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:52,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:52,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:52,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854404553] [2022-11-03 01:45:52,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854404553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:52,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:52,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321666912] [2022-11-03 01:45:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:52,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:52,598 INFO L87 Difference]: Start difference. First operand 675 states and 951 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:52,679 INFO L93 Difference]: Finished difference Result 695 states and 973 transitions. [2022-11-03 01:45:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:52,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-03 01:45:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:52,683 INFO L225 Difference]: With dead ends: 695 [2022-11-03 01:45:52,683 INFO L226 Difference]: Without dead ends: 693 [2022-11-03 01:45:52,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:52,684 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 63 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:52,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1222 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-03 01:45:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 689. [2022-11-03 01:45:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 575 states have (on average 1.3843478260869566) internal successors, (796), 581 states have internal predecessors, (796), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 968 transitions. [2022-11-03 01:45:52,700 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 968 transitions. Word has length 37 [2022-11-03 01:45:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:52,701 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 968 transitions. [2022-11-03 01:45:52,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 968 transitions. [2022-11-03 01:45:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:52,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:52,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:52,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:52,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:52,915 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:52,915 INFO L85 PathProgramCache]: Analyzing trace with hash 302691164, now seen corresponding path program 1 times [2022-11-03 01:45:52,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:52,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721664685] [2022-11-03 01:45:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:52,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:52,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:52,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:52,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 01:45:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:53,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:45:53,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:53,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:53,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:53,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721664685] [2022-11-03 01:45:53,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721664685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:53,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:53,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:53,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653959022] [2022-11-03 01:45:53,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:53,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:53,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:53,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:53,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:53,180 INFO L87 Difference]: Start difference. First operand 689 states and 968 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:53,351 INFO L93 Difference]: Finished difference Result 705 states and 984 transitions. [2022-11-03 01:45:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:53,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-03 01:45:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:53,355 INFO L225 Difference]: With dead ends: 705 [2022-11-03 01:45:53,355 INFO L226 Difference]: Without dead ends: 688 [2022-11-03 01:45:53,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:53,356 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 39 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:53,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3848 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-03 01:45:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2022-11-03 01:45:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 574 states have (on average 1.3832752613240418) internal successors, (794), 580 states have internal predecessors, (794), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 966 transitions. [2022-11-03 01:45:53,373 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 966 transitions. Word has length 36 [2022-11-03 01:45:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:53,373 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 966 transitions. [2022-11-03 01:45:53,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 966 transitions. [2022-11-03 01:45:53,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:45:53,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:53,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:53,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-03 01:45:53,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:53,588 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash 914570012, now seen corresponding path program 1 times [2022-11-03 01:45:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:53,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403988280] [2022-11-03 01:45:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:53,589 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:53,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 01:45:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:53,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:45:53,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:53,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:53,818 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:53,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403988280] [2022-11-03 01:45:53,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403988280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:53,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:53,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:53,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38808420] [2022-11-03 01:45:53,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:53,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:53,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:53,821 INFO L87 Difference]: Start difference. First operand 688 states and 966 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:53,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:53,954 INFO L93 Difference]: Finished difference Result 698 states and 976 transitions. [2022-11-03 01:45:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:53,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-03 01:45:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:53,958 INFO L225 Difference]: With dead ends: 698 [2022-11-03 01:45:53,958 INFO L226 Difference]: Without dead ends: 673 [2022-11-03 01:45:53,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:53,962 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 52 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:53,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3197 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-03 01:45:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2022-11-03 01:45:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 559 states have (on average 1.3917710196779964) internal successors, (778), 565 states have internal predecessors, (778), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2022-11-03 01:45:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 950 transitions. [2022-11-03 01:45:53,984 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 950 transitions. Word has length 36 [2022-11-03 01:45:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:53,984 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 950 transitions. [2022-11-03 01:45:53,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 950 transitions. [2022-11-03 01:45:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 01:45:53,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:53,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:54,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:54,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:54,198 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash 366960515, now seen corresponding path program 1 times [2022-11-03 01:45:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:54,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478767399] [2022-11-03 01:45:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:54,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:54,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:54,200 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:54,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 01:45:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:54,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:45:54,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:54,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:54,521 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:54,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478767399] [2022-11-03 01:45:54,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478767399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:54,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:54,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640392601] [2022-11-03 01:45:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:54,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:54,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:54,524 INFO L87 Difference]: Start difference. First operand 673 states and 950 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:55,018 INFO L93 Difference]: Finished difference Result 782 states and 1094 transitions. [2022-11-03 01:45:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-11-03 01:45:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:55,022 INFO L225 Difference]: With dead ends: 782 [2022-11-03 01:45:55,022 INFO L226 Difference]: Without dead ends: 780 [2022-11-03 01:45:55,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:55,025 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 761 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:55,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1120 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:45:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-03 01:45:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 702. [2022-11-03 01:45:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 586 states have (on average 1.378839590443686) internal successors, (808), 592 states have internal predecessors, (808), 84 states have call successors, (84), 24 states have call predecessors, (84), 31 states have return successors, (90), 85 states have call predecessors, (90), 77 states have call successors, (90) [2022-11-03 01:45:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 982 transitions. [2022-11-03 01:45:55,043 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 982 transitions. Word has length 39 [2022-11-03 01:45:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:55,043 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 982 transitions. [2022-11-03 01:45:55,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 982 transitions. [2022-11-03 01:45:55,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 01:45:55,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:55,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:55,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:55,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:55,259 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:55,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1196068657, now seen corresponding path program 1 times [2022-11-03 01:45:55,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:55,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282548867] [2022-11-03 01:45:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:55,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:55,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:55,261 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:55,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 01:45:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:55,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:45:55,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:55,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:55,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:55,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282548867] [2022-11-03 01:45:55,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282548867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:55,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:55,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925558311] [2022-11-03 01:45:55,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:55,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:55,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:55,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:55,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:55,477 INFO L87 Difference]: Start difference. First operand 702 states and 982 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:55,688 INFO L93 Difference]: Finished difference Result 720 states and 1001 transitions. [2022-11-03 01:45:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:55,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-11-03 01:45:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:55,691 INFO L225 Difference]: With dead ends: 720 [2022-11-03 01:45:55,691 INFO L226 Difference]: Without dead ends: 700 [2022-11-03 01:45:55,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:55,692 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 60 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:55,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3690 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-03 01:45:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2022-11-03 01:45:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 584 states have (on average 1.3767123287671232) internal successors, (804), 590 states have internal predecessors, (804), 84 states have call successors, (84), 24 states have call predecessors, (84), 31 states have return successors, (90), 85 states have call predecessors, (90), 77 states have call successors, (90) [2022-11-03 01:45:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 978 transitions. [2022-11-03 01:45:55,709 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 978 transitions. Word has length 40 [2022-11-03 01:45:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:55,709 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 978 transitions. [2022-11-03 01:45:55,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 978 transitions. [2022-11-03 01:45:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 01:45:55,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:55,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:55,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-03 01:45:55,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:55,923 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1438594100, now seen corresponding path program 1 times [2022-11-03 01:45:55,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:55,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428643283] [2022-11-03 01:45:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:55,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:55,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:55,925 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:55,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 01:45:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:56,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:45:56,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:56,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:56,170 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:56,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428643283] [2022-11-03 01:45:56,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428643283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:56,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:56,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310670248] [2022-11-03 01:45:56,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:56,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:56,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:56,172 INFO L87 Difference]: Start difference. First operand 700 states and 978 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:56,541 INFO L93 Difference]: Finished difference Result 1246 states and 1751 transitions. [2022-11-03 01:45:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-03 01:45:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:56,550 INFO L225 Difference]: With dead ends: 1246 [2022-11-03 01:45:56,550 INFO L226 Difference]: Without dead ends: 1246 [2022-11-03 01:45:56,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:56,551 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 547 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:56,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 3923 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-11-03 01:45:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1037. [2022-11-03 01:45:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 859 states have (on average 1.4016298020954598) internal successors, (1204), 883 states have internal predecessors, (1204), 126 states have call successors, (126), 41 states have call predecessors, (126), 51 states have return successors, (140), 112 states have call predecessors, (140), 119 states have call successors, (140) [2022-11-03 01:45:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1470 transitions. [2022-11-03 01:45:56,581 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1470 transitions. Word has length 43 [2022-11-03 01:45:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:56,582 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1470 transitions. [2022-11-03 01:45:56,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1470 transitions. [2022-11-03 01:45:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:45:56,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:56,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:56,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:56,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:56,797 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1615816211, now seen corresponding path program 1 times [2022-11-03 01:45:56,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:56,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541441536] [2022-11-03 01:45:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:56,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:56,799 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:56,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 01:45:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:56,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:45:56,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:56,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:56,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:56,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541441536] [2022-11-03 01:45:56,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541441536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:56,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:56,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:56,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371847144] [2022-11-03 01:45:56,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:56,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:56,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:56,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:56,976 INFO L87 Difference]: Start difference. First operand 1037 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:45:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:57,038 INFO L93 Difference]: Finished difference Result 1012 states and 1434 transitions. [2022-11-03 01:45:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:57,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-03 01:45:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:57,043 INFO L225 Difference]: With dead ends: 1012 [2022-11-03 01:45:57,043 INFO L226 Difference]: Without dead ends: 1012 [2022-11-03 01:45:57,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:57,044 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 9 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:57,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1234 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-03 01:45:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2022-11-03 01:45:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 837 states have (on average 1.3990442054958183) internal successors, (1171), 860 states have internal predecessors, (1171), 125 states have call successors, (125), 41 states have call predecessors, (125), 49 states have return successors, (138), 110 states have call predecessors, (138), 119 states have call successors, (138) [2022-11-03 01:45:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1434 transitions. [2022-11-03 01:45:57,069 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1434 transitions. Word has length 45 [2022-11-03 01:45:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:57,069 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1434 transitions. [2022-11-03 01:45:57,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:45:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1434 transitions. [2022-11-03 01:45:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 01:45:57,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:57,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:57,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:57,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:57,284 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash -938217641, now seen corresponding path program 1 times [2022-11-03 01:45:57,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:57,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451548022] [2022-11-03 01:45:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:57,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:57,286 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:57,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 01:45:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:57,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:45:57,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:57,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:57,582 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:57,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451548022] [2022-11-03 01:45:57,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451548022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:57,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:57,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:45:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281159032] [2022-11-03 01:45:57,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:57,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:57,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:57,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:57,584 INFO L87 Difference]: Start difference. First operand 1012 states and 1434 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:57,855 INFO L93 Difference]: Finished difference Result 1072 states and 1505 transitions. [2022-11-03 01:45:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:45:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-03 01:45:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:57,860 INFO L225 Difference]: With dead ends: 1072 [2022-11-03 01:45:57,860 INFO L226 Difference]: Without dead ends: 1060 [2022-11-03 01:45:57,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:45:57,861 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 17 mSDsluCounter, 4898 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5529 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:57,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5529 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-11-03 01:45:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1033. [2022-11-03 01:45:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 856 states have (on average 1.394859813084112) internal successors, (1194), 880 states have internal predecessors, (1194), 125 states have call successors, (125), 41 states have call predecessors, (125), 51 states have return successors, (146), 111 states have call predecessors, (146), 119 states have call successors, (146) [2022-11-03 01:45:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1465 transitions. [2022-11-03 01:45:57,909 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1465 transitions. Word has length 43 [2022-11-03 01:45:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:57,909 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1465 transitions. [2022-11-03 01:45:57,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1465 transitions. [2022-11-03 01:45:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:45:57,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:57,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:57,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:58,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:58,125 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1007838826, now seen corresponding path program 1 times [2022-11-03 01:45:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192028298] [2022-11-03 01:45:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:58,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:58,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:58,126 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:58,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 01:45:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:58,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:45:58,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:58,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:58,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:58,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192028298] [2022-11-03 01:45:58,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192028298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:58,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:58,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:45:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840338385] [2022-11-03 01:45:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:58,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:58,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:58,435 INFO L87 Difference]: Start difference. First operand 1033 states and 1465 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:58,675 INFO L93 Difference]: Finished difference Result 1072 states and 1504 transitions. [2022-11-03 01:45:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:45:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-03 01:45:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:58,680 INFO L225 Difference]: With dead ends: 1072 [2022-11-03 01:45:58,680 INFO L226 Difference]: Without dead ends: 1060 [2022-11-03 01:45:58,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:45:58,681 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:58,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4961 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:58,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-11-03 01:45:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1033. [2022-11-03 01:45:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 856 states have (on average 1.394859813084112) internal successors, (1194), 880 states have internal predecessors, (1194), 125 states have call successors, (125), 41 states have call predecessors, (125), 51 states have return successors, (145), 111 states have call predecessors, (145), 119 states have call successors, (145) [2022-11-03 01:45:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1464 transitions. [2022-11-03 01:45:58,705 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1464 transitions. Word has length 44 [2022-11-03 01:45:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:58,705 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1464 transitions. [2022-11-03 01:45:58,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:45:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1464 transitions. [2022-11-03 01:45:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:45:58,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:58,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:58,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:58,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:58,921 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash 590562129, now seen corresponding path program 1 times [2022-11-03 01:45:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:58,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449760242] [2022-11-03 01:45:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:58,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:58,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:58,922 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:58,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 01:45:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:59,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:45:59,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:59,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:45:59,188 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:45:59,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449760242] [2022-11-03 01:45:59,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449760242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:59,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:59,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:45:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395860708] [2022-11-03 01:45:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:45:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:45:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:45:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:59,190 INFO L87 Difference]: Start difference. First operand 1033 states and 1464 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:59,503 INFO L93 Difference]: Finished difference Result 1064 states and 1496 transitions. [2022-11-03 01:45:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:45:59,504 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-11-03 01:45:59,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:59,509 INFO L225 Difference]: With dead ends: 1064 [2022-11-03 01:45:59,509 INFO L226 Difference]: Without dead ends: 1047 [2022-11-03 01:45:59,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:45:59,510 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 80 mSDsluCounter, 4959 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:59,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 5593 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-11-03 01:45:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1031. [2022-11-03 01:45:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3929824561403508) internal successors, (1191), 879 states have internal predecessors, (1191), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (144), 110 states have call predecessors, (144), 118 states have call successors, (144) [2022-11-03 01:45:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1459 transitions. [2022-11-03 01:45:59,536 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1459 transitions. Word has length 47 [2022-11-03 01:45:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:59,536 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1459 transitions. [2022-11-03 01:45:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1459 transitions. [2022-11-03 01:45:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:45:59,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:59,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:59,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:59,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:45:59,752 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:45:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1771938136, now seen corresponding path program 1 times [2022-11-03 01:45:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:45:59,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694885962] [2022-11-03 01:45:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:59,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:45:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:45:59,754 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:45:59,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 01:45:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:59,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:45:59,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:00,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:00,024 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:00,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694885962] [2022-11-03 01:46:00,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694885962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:00,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:00,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422026794] [2022-11-03 01:46:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:00,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:00,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:00,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:00,025 INFO L87 Difference]: Start difference. First operand 1031 states and 1459 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:00,351 INFO L93 Difference]: Finished difference Result 1048 states and 1477 transitions. [2022-11-03 01:46:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:00,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-03 01:46:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:00,356 INFO L225 Difference]: With dead ends: 1048 [2022-11-03 01:46:00,356 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 01:46:00,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:00,358 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 62 mSDsluCounter, 4841 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:00,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 5455 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 01:46:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2022-11-03 01:46:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3859649122807018) internal successors, (1185), 879 states have internal predecessors, (1185), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (144), 110 states have call predecessors, (144), 118 states have call successors, (144) [2022-11-03 01:46:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1453 transitions. [2022-11-03 01:46:00,380 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1453 transitions. Word has length 44 [2022-11-03 01:46:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:00,380 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1453 transitions. [2022-11-03 01:46:00,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1453 transitions. [2022-11-03 01:46:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 01:46:00,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:00,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:00,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:00,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:00,601 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:00,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:00,601 INFO L85 PathProgramCache]: Analyzing trace with hash 877591917, now seen corresponding path program 1 times [2022-11-03 01:46:00,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:00,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752623566] [2022-11-03 01:46:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:00,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:00,603 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:00,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 01:46:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:00,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:00,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:00,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:00,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:00,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752623566] [2022-11-03 01:46:00,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752623566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:00,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:00,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:46:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715959206] [2022-11-03 01:46:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:46:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:46:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:00,917 INFO L87 Difference]: Start difference. First operand 1031 states and 1453 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:01,231 INFO L93 Difference]: Finished difference Result 1071 states and 1493 transitions. [2022-11-03 01:46:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:46:01,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-03 01:46:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:01,236 INFO L225 Difference]: With dead ends: 1071 [2022-11-03 01:46:01,237 INFO L226 Difference]: Without dead ends: 1058 [2022-11-03 01:46:01,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:46:01,238 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 29 mSDsluCounter, 5531 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6165 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:01,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 6165 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-03 01:46:01,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1031. [2022-11-03 01:46:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3859649122807018) internal successors, (1185), 879 states have internal predecessors, (1185), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2022-11-03 01:46:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1452 transitions. [2022-11-03 01:46:01,261 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1452 transitions. Word has length 46 [2022-11-03 01:46:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:01,261 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1452 transitions. [2022-11-03 01:46:01,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1452 transitions. [2022-11-03 01:46:01,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:46:01,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:01,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:01,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:01,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:01,478 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:01,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1691543900, now seen corresponding path program 1 times [2022-11-03 01:46:01,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:01,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668132972] [2022-11-03 01:46:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:01,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:01,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:01,480 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:01,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 01:46:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:01,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:01,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:01,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:01,631 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:01,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668132972] [2022-11-03 01:46:01,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668132972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:01,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:01,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:01,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963492989] [2022-11-03 01:46:01,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:01,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:46:01,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:01,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:46:01,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:01,633 INFO L87 Difference]: Start difference. First operand 1031 states and 1452 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:01,741 INFO L93 Difference]: Finished difference Result 1052 states and 1475 transitions. [2022-11-03 01:46:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:46:01,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-03 01:46:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:01,746 INFO L225 Difference]: With dead ends: 1052 [2022-11-03 01:46:01,746 INFO L226 Difference]: Without dead ends: 1052 [2022-11-03 01:46:01,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:01,747 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 39 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:01,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1798 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-11-03 01:46:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1033. [2022-11-03 01:46:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 857 states have (on average 1.3850641773628938) internal successors, (1187), 881 states have internal predecessors, (1187), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2022-11-03 01:46:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1454 transitions. [2022-11-03 01:46:01,772 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1454 transitions. Word has length 44 [2022-11-03 01:46:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:01,772 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1454 transitions. [2022-11-03 01:46:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1454 transitions. [2022-11-03 01:46:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:46:01,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:01,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:01,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:01,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:01,988 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:01,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1825557406, now seen corresponding path program 1 times [2022-11-03 01:46:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:01,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891311194] [2022-11-03 01:46:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:01,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:01,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:01,989 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:01,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 01:46:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:02,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:46:02,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:02,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:02,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891311194] [2022-11-03 01:46:02,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891311194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:02,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:02,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543752413] [2022-11-03 01:46:02,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:02,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:46:02,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:46:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:02,216 INFO L87 Difference]: Start difference. First operand 1033 states and 1454 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:02,422 INFO L93 Difference]: Finished difference Result 1051 states and 1473 transitions. [2022-11-03 01:46:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:02,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-03 01:46:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:02,427 INFO L225 Difference]: With dead ends: 1051 [2022-11-03 01:46:02,427 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 01:46:02,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:02,428 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 60 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:02,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3626 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 01:46:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2022-11-03 01:46:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3812865497076023) internal successors, (1181), 879 states have internal predecessors, (1181), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2022-11-03 01:46:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1448 transitions. [2022-11-03 01:46:02,452 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1448 transitions. Word has length 44 [2022-11-03 01:46:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:02,452 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1448 transitions. [2022-11-03 01:46:02,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1448 transitions. [2022-11-03 01:46:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:46:02,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:02,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:02,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:02,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:02,667 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:02,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash 345167796, now seen corresponding path program 1 times [2022-11-03 01:46:02,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:02,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794541026] [2022-11-03 01:46:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:02,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:02,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:02,669 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:02,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 01:46:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:02,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:02,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:02,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:02,807 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:02,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794541026] [2022-11-03 01:46:02,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794541026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:02,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:02,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313575515] [2022-11-03 01:46:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:02,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:02,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:02,809 INFO L87 Difference]: Start difference. First operand 1031 states and 1448 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:02,820 INFO L93 Difference]: Finished difference Result 1047 states and 1464 transitions. [2022-11-03 01:46:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-03 01:46:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:02,825 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 01:46:02,825 INFO L226 Difference]: Without dead ends: 1047 [2022-11-03 01:46:02,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:02,826 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 19 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:02,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1235 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-11-03 01:46:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1031. [2022-11-03 01:46:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3801169590643274) internal successors, (1180), 879 states have internal predecessors, (1180), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2022-11-03 01:46:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1447 transitions. [2022-11-03 01:46:02,850 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1447 transitions. Word has length 44 [2022-11-03 01:46:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:02,850 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1447 transitions. [2022-11-03 01:46:02,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1447 transitions. [2022-11-03 01:46:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:46:02,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:02,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:02,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:03,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:03,065 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:03,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash 211154290, now seen corresponding path program 1 times [2022-11-03 01:46:03,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:03,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969573017] [2022-11-03 01:46:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:03,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:03,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:03,068 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:03,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 01:46:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:03,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:46:03,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:03,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:03,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:03,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969573017] [2022-11-03 01:46:03,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969573017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:03,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:03,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007015570] [2022-11-03 01:46:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:46:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:46:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:03,283 INFO L87 Difference]: Start difference. First operand 1031 states and 1447 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:03,481 INFO L93 Difference]: Finished difference Result 1046 states and 1462 transitions. [2022-11-03 01:46:03,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:03,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-03 01:46:03,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:03,485 INFO L225 Difference]: With dead ends: 1046 [2022-11-03 01:46:03,486 INFO L226 Difference]: Without dead ends: 1019 [2022-11-03 01:46:03,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:03,487 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 68 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:03,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3584 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2022-11-03 01:46:03,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1019. [2022-11-03 01:46:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 846 states have (on average 1.3747044917257683) internal successors, (1163), 870 states have internal predecessors, (1163), 121 states have call successors, (121), 41 states have call predecessors, (121), 51 states have return successors, (140), 107 states have call predecessors, (140), 115 states have call successors, (140) [2022-11-03 01:46:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1424 transitions. [2022-11-03 01:46:03,509 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1424 transitions. Word has length 44 [2022-11-03 01:46:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:03,509 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1424 transitions. [2022-11-03 01:46:03,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1424 transitions. [2022-11-03 01:46:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:46:03,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:03,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:03,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:03,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:03,724 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:03,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1307777067, now seen corresponding path program 1 times [2022-11-03 01:46:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:03,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578477218] [2022-11-03 01:46:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:03,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:03,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:03,726 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:03,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 01:46:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:03,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:03,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:03,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:03,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578477218] [2022-11-03 01:46:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578477218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:03,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:03,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:03,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2455651] [2022-11-03 01:46:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:03,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:46:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:46:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:03,882 INFO L87 Difference]: Start difference. First operand 1019 states and 1424 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:04,076 INFO L93 Difference]: Finished difference Result 1061 states and 1498 transitions. [2022-11-03 01:46:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:46:04,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-03 01:46:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:04,082 INFO L225 Difference]: With dead ends: 1061 [2022-11-03 01:46:04,082 INFO L226 Difference]: Without dead ends: 1061 [2022-11-03 01:46:04,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:04,083 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 21 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:04,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1702 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-03 01:46:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1033. [2022-11-03 01:46:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 856 states have (on average 1.375) internal successors, (1177), 882 states have internal predecessors, (1177), 123 states have call successors, (123), 41 states have call predecessors, (123), 53 states have return successors, (154), 109 states have call predecessors, (154), 117 states have call successors, (154) [2022-11-03 01:46:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1454 transitions. [2022-11-03 01:46:04,108 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1454 transitions. Word has length 45 [2022-11-03 01:46:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:04,108 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1454 transitions. [2022-11-03 01:46:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1454 transitions. [2022-11-03 01:46:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:46:04,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:04,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:04,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:04,325 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1817250157, now seen corresponding path program 1 times [2022-11-03 01:46:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:04,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348598402] [2022-11-03 01:46:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:04,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:04,328 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:04,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 01:46:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:04,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:04,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:04,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:04,572 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:04,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348598402] [2022-11-03 01:46:04,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348598402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:04,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:04,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019003176] [2022-11-03 01:46:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:04,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:04,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:04,574 INFO L87 Difference]: Start difference. First operand 1033 states and 1454 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:04,778 INFO L93 Difference]: Finished difference Result 1068 states and 1530 transitions. [2022-11-03 01:46:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:04,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-03 01:46:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:04,782 INFO L225 Difference]: With dead ends: 1068 [2022-11-03 01:46:04,782 INFO L226 Difference]: Without dead ends: 1049 [2022-11-03 01:46:04,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:04,783 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 60 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 4772 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:04,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 4772 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2022-11-03 01:46:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1041. [2022-11-03 01:46:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 860 states have (on average 1.3732558139534883) internal successors, (1181), 890 states have internal predecessors, (1181), 123 states have call successors, (123), 41 states have call predecessors, (123), 57 states have return successors, (186), 109 states have call predecessors, (186), 117 states have call successors, (186) [2022-11-03 01:46:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1490 transitions. [2022-11-03 01:46:04,807 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1490 transitions. Word has length 45 [2022-11-03 01:46:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:04,808 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1490 transitions. [2022-11-03 01:46:04,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1490 transitions. [2022-11-03 01:46:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:46:04,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:04,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:04,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:05,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:05,024 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:05,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash -201116362, now seen corresponding path program 1 times [2022-11-03 01:46:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:05,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314843892] [2022-11-03 01:46:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:05,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:05,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:05,026 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:05,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 01:46:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:05,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:05,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:05,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:05,356 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:05,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314843892] [2022-11-03 01:46:05,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314843892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:05,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:05,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:05,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988740240] [2022-11-03 01:46:05,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:05,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:05,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:05,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:05,358 INFO L87 Difference]: Start difference. First operand 1041 states and 1490 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:05,670 INFO L93 Difference]: Finished difference Result 1082 states and 1531 transitions. [2022-11-03 01:46:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-11-03 01:46:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:05,674 INFO L225 Difference]: With dead ends: 1082 [2022-11-03 01:46:05,675 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 01:46:05,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:05,679 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 46 mSDsluCounter, 5275 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5880 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:05,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5880 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 01:46:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1041. [2022-11-03 01:46:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 860 states have (on average 1.3732558139534883) internal successors, (1181), 890 states have internal predecessors, (1181), 123 states have call successors, (123), 41 states have call predecessors, (123), 57 states have return successors, (185), 109 states have call predecessors, (185), 117 states have call successors, (185) [2022-11-03 01:46:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1489 transitions. [2022-11-03 01:46:05,702 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1489 transitions. Word has length 47 [2022-11-03 01:46:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:05,702 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1489 transitions. [2022-11-03 01:46:05,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1489 transitions. [2022-11-03 01:46:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 01:46:05,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:05,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:05,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:05,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:05,918 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:05,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:05,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1741355878, now seen corresponding path program 1 times [2022-11-03 01:46:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:05,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492159087] [2022-11-03 01:46:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:05,920 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:05,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 01:46:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:06,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:06,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:06,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492159087] [2022-11-03 01:46:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492159087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:06,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:06,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974072258] [2022-11-03 01:46:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:06,260 INFO L87 Difference]: Start difference. First operand 1041 states and 1489 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:06,576 INFO L93 Difference]: Finished difference Result 1082 states and 1530 transitions. [2022-11-03 01:46:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2022-11-03 01:46:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:06,579 INFO L225 Difference]: With dead ends: 1082 [2022-11-03 01:46:06,580 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 01:46:06,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:06,580 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 46 mSDsluCounter, 5275 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5879 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:06,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5879 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:06,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 01:46:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1041. [2022-11-03 01:46:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 860 states have (on average 1.3732558139534883) internal successors, (1181), 890 states have internal predecessors, (1181), 123 states have call successors, (123), 41 states have call predecessors, (123), 57 states have return successors, (184), 109 states have call predecessors, (184), 117 states have call successors, (184) [2022-11-03 01:46:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1488 transitions. [2022-11-03 01:46:06,604 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1488 transitions. Word has length 48 [2022-11-03 01:46:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:06,605 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1488 transitions. [2022-11-03 01:46:06,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1488 transitions. [2022-11-03 01:46:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:46:06,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:06,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:06,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:06,821 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash -495181895, now seen corresponding path program 1 times [2022-11-03 01:46:06,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:06,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661869030] [2022-11-03 01:46:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:06,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:06,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:06,823 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:06,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 01:46:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:06,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:06,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:07,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:07,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661869030] [2022-11-03 01:46:07,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661869030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:07,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:07,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:07,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054578511] [2022-11-03 01:46:07,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:07,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:07,180 INFO L87 Difference]: Start difference. First operand 1041 states and 1488 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:07,511 INFO L93 Difference]: Finished difference Result 1082 states and 1529 transitions. [2022-11-03 01:46:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-11-03 01:46:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:07,515 INFO L225 Difference]: With dead ends: 1082 [2022-11-03 01:46:07,515 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 01:46:07,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:07,516 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 42 mSDsluCounter, 5872 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:07,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6477 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 01:46:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1041. [2022-11-03 01:46:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 860 states have (on average 1.3732558139534883) internal successors, (1181), 890 states have internal predecessors, (1181), 123 states have call successors, (123), 41 states have call predecessors, (123), 57 states have return successors, (183), 109 states have call predecessors, (183), 117 states have call successors, (183) [2022-11-03 01:46:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1487 transitions. [2022-11-03 01:46:07,539 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1487 transitions. Word has length 54 [2022-11-03 01:46:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:07,540 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1487 transitions. [2022-11-03 01:46:07,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1487 transitions. [2022-11-03 01:46:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 01:46:07,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:07,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:07,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:07,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:07,755 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1309709834, now seen corresponding path program 1 times [2022-11-03 01:46:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:07,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150951351] [2022-11-03 01:46:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:07,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:07,757 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:07,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 01:46:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:07,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:07,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:08,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:08,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:08,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150951351] [2022-11-03 01:46:08,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150951351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:08,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:08,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:08,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554742137] [2022-11-03 01:46:08,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:08,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:08,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:08,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:08,032 INFO L87 Difference]: Start difference. First operand 1041 states and 1487 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:08,308 INFO L93 Difference]: Finished difference Result 1110 states and 1567 transitions. [2022-11-03 01:46:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:08,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-03 01:46:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:08,312 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 01:46:08,312 INFO L226 Difference]: Without dead ends: 1098 [2022-11-03 01:46:08,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:08,313 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 17 mSDsluCounter, 4725 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5338 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:08,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5338 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-03 01:46:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1062. [2022-11-03 01:46:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 879 states have (on average 1.3697383390216156) internal successors, (1204), 910 states have internal predecessors, (1204), 123 states have call successors, (123), 41 states have call predecessors, (123), 59 states have return successors, (191), 110 states have call predecessors, (191), 117 states have call successors, (191) [2022-11-03 01:46:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1518 transitions. [2022-11-03 01:46:08,348 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1518 transitions. Word has length 46 [2022-11-03 01:46:08,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:08,348 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1518 transitions. [2022-11-03 01:46:08,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1518 transitions. [2022-11-03 01:46:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:46:08,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:08,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:08,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:08,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:08,564 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1991597085, now seen corresponding path program 1 times [2022-11-03 01:46:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:08,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262072553] [2022-11-03 01:46:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:08,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:08,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:08,567 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:08,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 01:46:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:08,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:08,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:08,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:08,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262072553] [2022-11-03 01:46:08,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262072553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:08,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:08,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419271315] [2022-11-03 01:46:08,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:08,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:08,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:08,852 INFO L87 Difference]: Start difference. First operand 1062 states and 1518 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:09,089 INFO L93 Difference]: Finished difference Result 1110 states and 1566 transitions. [2022-11-03 01:46:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-11-03 01:46:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:09,093 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 01:46:09,093 INFO L226 Difference]: Without dead ends: 1098 [2022-11-03 01:46:09,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:09,093 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 21 mSDsluCounter, 4140 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4752 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:09,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4752 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-03 01:46:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1062. [2022-11-03 01:46:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 879 states have (on average 1.3697383390216156) internal successors, (1204), 910 states have internal predecessors, (1204), 123 states have call successors, (123), 41 states have call predecessors, (123), 59 states have return successors, (190), 110 states have call predecessors, (190), 117 states have call successors, (190) [2022-11-03 01:46:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1517 transitions. [2022-11-03 01:46:09,121 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1517 transitions. Word has length 45 [2022-11-03 01:46:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:09,121 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1517 transitions. [2022-11-03 01:46:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1517 transitions. [2022-11-03 01:46:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:46:09,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:09,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:09,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 01:46:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:09,337 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:09,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1530884490, now seen corresponding path program 1 times [2022-11-03 01:46:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:09,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405514697] [2022-11-03 01:46:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:09,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:09,339 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:09,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 01:46:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:09,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:09,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:09,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:09,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:09,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405514697] [2022-11-03 01:46:09,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405514697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:09,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:09,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842076836] [2022-11-03 01:46:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:09,485 INFO L87 Difference]: Start difference. First operand 1062 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:09,500 INFO L93 Difference]: Finished difference Result 1078 states and 1533 transitions. [2022-11-03 01:46:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:09,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-11-03 01:46:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:09,504 INFO L225 Difference]: With dead ends: 1078 [2022-11-03 01:46:09,504 INFO L226 Difference]: Without dead ends: 1078 [2022-11-03 01:46:09,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:09,505 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 19 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:09,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1211 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-11-03 01:46:09,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1062. [2022-11-03 01:46:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 879 states have (on average 1.3686006825938566) internal successors, (1203), 910 states have internal predecessors, (1203), 123 states have call successors, (123), 41 states have call predecessors, (123), 59 states have return successors, (190), 110 states have call predecessors, (190), 117 states have call successors, (190) [2022-11-03 01:46:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1516 transitions. [2022-11-03 01:46:09,529 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1516 transitions. Word has length 45 [2022-11-03 01:46:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:09,530 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1516 transitions. [2022-11-03 01:46:09,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1516 transitions. [2022-11-03 01:46:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:46:09,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:09,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:09,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:09,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:09,745 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:09,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1664897996, now seen corresponding path program 1 times [2022-11-03 01:46:09,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:09,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479313124] [2022-11-03 01:46:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:09,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:09,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:09,747 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:09,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 01:46:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:09,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:46:09,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:09,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:09,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479313124] [2022-11-03 01:46:09,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479313124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:09,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:09,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028134146] [2022-11-03 01:46:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:46:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:46:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:09,938 INFO L87 Difference]: Start difference. First operand 1062 states and 1516 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:10,129 INFO L93 Difference]: Finished difference Result 1086 states and 1545 transitions. [2022-11-03 01:46:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:10,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-11-03 01:46:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:10,132 INFO L225 Difference]: With dead ends: 1086 [2022-11-03 01:46:10,132 INFO L226 Difference]: Without dead ends: 1054 [2022-11-03 01:46:10,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:10,133 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 76 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:10,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 3521 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-11-03 01:46:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2022-11-03 01:46:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 873 states have (on average 1.3642611683848798) internal successors, (1191), 904 states have internal predecessors, (1191), 121 states have call successors, (121), 41 states have call predecessors, (121), 59 states have return successors, (188), 108 states have call predecessors, (188), 115 states have call successors, (188) [2022-11-03 01:46:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1500 transitions. [2022-11-03 01:46:10,158 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1500 transitions. Word has length 45 [2022-11-03 01:46:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:10,158 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1500 transitions. [2022-11-03 01:46:10,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1500 transitions. [2022-11-03 01:46:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:46:10,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:10,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:10,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:10,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:10,374 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:10,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1130031656, now seen corresponding path program 1 times [2022-11-03 01:46:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:10,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934784709] [2022-11-03 01:46:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:10,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:10,376 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:10,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 01:46:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:10,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:10,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:10,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:10,528 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934784709] [2022-11-03 01:46:10,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934784709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:10,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:10,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:10,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445792702] [2022-11-03 01:46:10,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:10,533 INFO L87 Difference]: Start difference. First operand 1054 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:10,545 INFO L93 Difference]: Finished difference Result 1070 states and 1516 transitions. [2022-11-03 01:46:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:10,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-11-03 01:46:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:10,549 INFO L225 Difference]: With dead ends: 1070 [2022-11-03 01:46:10,549 INFO L226 Difference]: Without dead ends: 1070 [2022-11-03 01:46:10,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:10,557 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 19 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:10,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1178 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-11-03 01:46:10,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1054. [2022-11-03 01:46:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 873 states have (on average 1.3631156930126003) internal successors, (1190), 904 states have internal predecessors, (1190), 121 states have call successors, (121), 41 states have call predecessors, (121), 59 states have return successors, (188), 108 states have call predecessors, (188), 115 states have call successors, (188) [2022-11-03 01:46:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1499 transitions. [2022-11-03 01:46:10,588 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1499 transitions. Word has length 45 [2022-11-03 01:46:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:10,590 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1499 transitions. [2022-11-03 01:46:10,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1499 transitions. [2022-11-03 01:46:10,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:46:10,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:10,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:10,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:10,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:10,807 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash 996018150, now seen corresponding path program 1 times [2022-11-03 01:46:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:10,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996403588] [2022-11-03 01:46:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:10,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:10,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:10,809 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:10,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 01:46:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:10,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:46:10,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:10,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:10,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:10,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996403588] [2022-11-03 01:46:10,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996403588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:10,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:11,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:11,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725067339] [2022-11-03 01:46:11,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:11,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:46:11,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:46:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:11,001 INFO L87 Difference]: Start difference. First operand 1054 states and 1499 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:11,155 INFO L93 Difference]: Finished difference Result 1069 states and 1514 transitions. [2022-11-03 01:46:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:11,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-11-03 01:46:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:11,158 INFO L225 Difference]: With dead ends: 1069 [2022-11-03 01:46:11,158 INFO L226 Difference]: Without dead ends: 1046 [2022-11-03 01:46:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:11,159 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 64 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3414 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:11,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 3414 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-03 01:46:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2022-11-03 01:46:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 867 states have (on average 1.3598615916955017) internal successors, (1179), 898 states have internal predecessors, (1179), 119 states have call successors, (119), 41 states have call predecessors, (119), 59 states have return successors, (186), 106 states have call predecessors, (186), 113 states have call successors, (186) [2022-11-03 01:46:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1484 transitions. [2022-11-03 01:46:11,183 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1484 transitions. Word has length 45 [2022-11-03 01:46:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:11,183 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1484 transitions. [2022-11-03 01:46:11,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1484 transitions. [2022-11-03 01:46:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:46:11,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:11,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:11,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:11,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:11,399 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:11,399 INFO L85 PathProgramCache]: Analyzing trace with hash -688570704, now seen corresponding path program 1 times [2022-11-03 01:46:11,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:11,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709651551] [2022-11-03 01:46:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:11,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:11,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:11,401 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:11,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 01:46:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:11,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:11,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:11,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:11,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:11,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709651551] [2022-11-03 01:46:11,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709651551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:11,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:11,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:11,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731723379] [2022-11-03 01:46:11,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:11,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:11,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:11,583 INFO L87 Difference]: Start difference. First operand 1046 states and 1484 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:46:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:11,620 INFO L93 Difference]: Finished difference Result 1038 states and 1468 transitions. [2022-11-03 01:46:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-03 01:46:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:11,624 INFO L225 Difference]: With dead ends: 1038 [2022-11-03 01:46:11,624 INFO L226 Difference]: Without dead ends: 1038 [2022-11-03 01:46:11,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:11,625 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 34 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:11,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2948 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-03 01:46:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1032. [2022-11-03 01:46:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 853 states have (on average 1.3563892145369285) internal successors, (1157), 884 states have internal predecessors, (1157), 119 states have call successors, (119), 41 states have call predecessors, (119), 59 states have return successors, (186), 106 states have call predecessors, (186), 113 states have call successors, (186) [2022-11-03 01:46:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1462 transitions. [2022-11-03 01:46:11,648 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1462 transitions. Word has length 49 [2022-11-03 01:46:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:11,649 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1462 transitions. [2022-11-03 01:46:11,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:46:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1462 transitions. [2022-11-03 01:46:11,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:46:11,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:11,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:11,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:11,865 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1799473543, now seen corresponding path program 1 times [2022-11-03 01:46:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:11,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778779990] [2022-11-03 01:46:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:11,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:11,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:11,867 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:11,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 01:46:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:11,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:11,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:12,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:12,149 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:12,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778779990] [2022-11-03 01:46:12,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778779990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:12,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:12,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:12,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181691039] [2022-11-03 01:46:12,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:12,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:12,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:12,151 INFO L87 Difference]: Start difference. First operand 1032 states and 1462 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:12,429 INFO L93 Difference]: Finished difference Result 1077 states and 1503 transitions. [2022-11-03 01:46:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:12,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-11-03 01:46:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:12,432 INFO L225 Difference]: With dead ends: 1077 [2022-11-03 01:46:12,432 INFO L226 Difference]: Without dead ends: 1064 [2022-11-03 01:46:12,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:12,433 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 17 mSDsluCounter, 4516 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5104 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:12,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5104 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-11-03 01:46:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1018. [2022-11-03 01:46:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 840 states have (on average 1.35) internal successors, (1134), 871 states have internal predecessors, (1134), 118 states have call successors, (118), 41 states have call predecessors, (118), 59 states have return successors, (185), 105 states have call predecessors, (185), 112 states have call successors, (185) [2022-11-03 01:46:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1437 transitions. [2022-11-03 01:46:12,456 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1437 transitions. Word has length 47 [2022-11-03 01:46:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:12,456 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1437 transitions. [2022-11-03 01:46:12,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1437 transitions. [2022-11-03 01:46:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 01:46:12,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:12,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:12,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:12,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:12,672 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash -487130130, now seen corresponding path program 1 times [2022-11-03 01:46:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:12,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197675819] [2022-11-03 01:46:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:12,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:12,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:12,673 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:12,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 01:46:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:12,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:12,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:12,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:12,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:12,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197675819] [2022-11-03 01:46:12,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197675819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:12,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:12,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263813396] [2022-11-03 01:46:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:12,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:12,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:12,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:12,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:12,968 INFO L87 Difference]: Start difference. First operand 1018 states and 1437 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:13,242 INFO L93 Difference]: Finished difference Result 1074 states and 1497 transitions. [2022-11-03 01:46:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-03 01:46:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:13,246 INFO L225 Difference]: With dead ends: 1074 [2022-11-03 01:46:13,246 INFO L226 Difference]: Without dead ends: 1061 [2022-11-03 01:46:13,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:13,247 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 17 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5040 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:13,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5040 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-03 01:46:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1006. [2022-11-03 01:46:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 831 states have (on average 1.3513838748495788) internal successors, (1123), 861 states have internal predecessors, (1123), 117 states have call successors, (117), 41 states have call predecessors, (117), 57 states have return successors, (177), 103 states have call predecessors, (177), 111 states have call successors, (177) [2022-11-03 01:46:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1417 transitions. [2022-11-03 01:46:13,275 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1417 transitions. Word has length 46 [2022-11-03 01:46:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:13,276 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1417 transitions. [2022-11-03 01:46:13,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1417 transitions. [2022-11-03 01:46:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 01:46:13,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:13,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:13,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:13,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:13,491 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 484610396, now seen corresponding path program 1 times [2022-11-03 01:46:13,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:13,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058429803] [2022-11-03 01:46:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:13,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:13,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:13,494 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:13,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 01:46:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:13,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:13,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:13,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:13,775 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:13,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058429803] [2022-11-03 01:46:13,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058429803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:13,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:13,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:13,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211667094] [2022-11-03 01:46:13,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:13,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:13,777 INFO L87 Difference]: Start difference. First operand 1006 states and 1417 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:14,057 INFO L93 Difference]: Finished difference Result 1021 states and 1432 transitions. [2022-11-03 01:46:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:14,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2022-11-03 01:46:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:14,061 INFO L225 Difference]: With dead ends: 1021 [2022-11-03 01:46:14,061 INFO L226 Difference]: Without dead ends: 1004 [2022-11-03 01:46:14,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:14,062 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 62 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4881 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:14,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4881 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-03 01:46:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2022-11-03 01:46:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 830 states have (on average 1.3493975903614457) internal successors, (1120), 860 states have internal predecessors, (1120), 116 states have call successors, (116), 41 states have call predecessors, (116), 57 states have return successors, (176), 102 states have call predecessors, (176), 110 states have call successors, (176) [2022-11-03 01:46:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1412 transitions. [2022-11-03 01:46:14,083 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1412 transitions. Word has length 48 [2022-11-03 01:46:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:14,084 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1412 transitions. [2022-11-03 01:46:14,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1412 transitions. [2022-11-03 01:46:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:46:14,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:14,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:14,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:14,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:14,299 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:14,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1904148279, now seen corresponding path program 1 times [2022-11-03 01:46:14,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:14,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561884629] [2022-11-03 01:46:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:14,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:14,301 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:14,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 01:46:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:14,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:14,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:14,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:14,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:14,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561884629] [2022-11-03 01:46:14,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561884629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:14,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:14,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616886362] [2022-11-03 01:46:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:14,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:14,568 INFO L87 Difference]: Start difference. First operand 1004 states and 1412 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:14,854 INFO L93 Difference]: Finished difference Result 1021 states and 1430 transitions. [2022-11-03 01:46:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:14,855 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-11-03 01:46:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:14,857 INFO L225 Difference]: With dead ends: 1021 [2022-11-03 01:46:14,857 INFO L226 Difference]: Without dead ends: 1004 [2022-11-03 01:46:14,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:14,858 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 62 mSDsluCounter, 4313 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:14,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4860 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-03 01:46:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2022-11-03 01:46:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 830 states have (on average 1.344578313253012) internal successors, (1116), 860 states have internal predecessors, (1116), 116 states have call successors, (116), 41 states have call predecessors, (116), 57 states have return successors, (176), 102 states have call predecessors, (176), 110 states have call successors, (176) [2022-11-03 01:46:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1408 transitions. [2022-11-03 01:46:14,879 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1408 transitions. Word has length 47 [2022-11-03 01:46:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:14,880 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1408 transitions. [2022-11-03 01:46:14,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1408 transitions. [2022-11-03 01:46:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:46:14,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:14,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:14,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:15,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:15,095 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2046804371, now seen corresponding path program 1 times [2022-11-03 01:46:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353551815] [2022-11-03 01:46:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:15,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:15,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:15,097 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:15,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 01:46:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:15,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:15,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:15,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:15,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:15,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353551815] [2022-11-03 01:46:15,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353551815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:15,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:15,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:15,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295012427] [2022-11-03 01:46:15,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:15,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:15,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:15,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:15,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:15,286 INFO L87 Difference]: Start difference. First operand 1004 states and 1408 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:15,327 INFO L93 Difference]: Finished difference Result 1033 states and 1448 transitions. [2022-11-03 01:46:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:15,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-11-03 01:46:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:15,330 INFO L225 Difference]: With dead ends: 1033 [2022-11-03 01:46:15,330 INFO L226 Difference]: Without dead ends: 1033 [2022-11-03 01:46:15,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:15,331 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 39 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:15,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2262 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:15,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-11-03 01:46:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1012. [2022-11-03 01:46:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 836 states have (on average 1.3421052631578947) internal successors, (1122), 866 states have internal predecessors, (1122), 116 states have call successors, (116), 41 states have call predecessors, (116), 59 states have return successors, (186), 104 states have call predecessors, (186), 110 states have call successors, (186) [2022-11-03 01:46:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1424 transitions. [2022-11-03 01:46:15,374 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1424 transitions. Word has length 47 [2022-11-03 01:46:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:15,374 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1424 transitions. [2022-11-03 01:46:15,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1424 transitions. [2022-11-03 01:46:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:46:15,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:15,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:15,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:15,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:15,589 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash 791864886, now seen corresponding path program 1 times [2022-11-03 01:46:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:15,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789069031] [2022-11-03 01:46:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:15,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:15,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:15,592 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:15,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 01:46:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:15,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:46:15,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:15,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:15,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:15,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789069031] [2022-11-03 01:46:15,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789069031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:15,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:15,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429919957] [2022-11-03 01:46:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:15,764 INFO L87 Difference]: Start difference. First operand 1012 states and 1424 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:15,772 INFO L93 Difference]: Finished difference Result 964 states and 1315 transitions. [2022-11-03 01:46:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:15,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-11-03 01:46:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:15,775 INFO L225 Difference]: With dead ends: 964 [2022-11-03 01:46:15,776 INFO L226 Difference]: Without dead ends: 962 [2022-11-03 01:46:15,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:15,777 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 3 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:15,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1072 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:15,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-11-03 01:46:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 865. [2022-11-03 01:46:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 726 states have (on average 1.334710743801653) internal successors, (969), 743 states have internal predecessors, (969), 87 states have call successors, (87), 38 states have call predecessors, (87), 51 states have return successors, (115), 83 states have call predecessors, (115), 81 states have call successors, (115) [2022-11-03 01:46:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1171 transitions. [2022-11-03 01:46:15,797 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1171 transitions. Word has length 47 [2022-11-03 01:46:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:15,797 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1171 transitions. [2022-11-03 01:46:15,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1171 transitions. [2022-11-03 01:46:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 01:46:15,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:15,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:15,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:16,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:16,013 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1366311556, now seen corresponding path program 1 times [2022-11-03 01:46:16,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:16,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206133263] [2022-11-03 01:46:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:16,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:16,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:16,016 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:16,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 01:46:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:16,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:16,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:16,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:16,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:16,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206133263] [2022-11-03 01:46:16,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206133263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:16,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:16,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:16,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327569026] [2022-11-03 01:46:16,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:16,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:16,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:16,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:16,315 INFO L87 Difference]: Start difference. First operand 865 states and 1171 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:16,578 INFO L93 Difference]: Finished difference Result 896 states and 1203 transitions. [2022-11-03 01:46:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2022-11-03 01:46:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:16,580 INFO L225 Difference]: With dead ends: 896 [2022-11-03 01:46:16,580 INFO L226 Difference]: Without dead ends: 879 [2022-11-03 01:46:16,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:16,581 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 64 mSDsluCounter, 4292 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 4849 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:16,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 4849 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-03 01:46:16,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 863. [2022-11-03 01:46:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 725 states have (on average 1.333793103448276) internal successors, (967), 742 states have internal predecessors, (967), 86 states have call successors, (86), 38 states have call predecessors, (86), 51 states have return successors, (114), 82 states have call predecessors, (114), 80 states have call successors, (114) [2022-11-03 01:46:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1167 transitions. [2022-11-03 01:46:16,596 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1167 transitions. Word has length 52 [2022-11-03 01:46:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:16,596 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1167 transitions. [2022-11-03 01:46:16,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1167 transitions. [2022-11-03 01:46:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:46:16,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:16,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:16,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-03 01:46:16,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:16,811 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1918382277, now seen corresponding path program 1 times [2022-11-03 01:46:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:16,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061924704] [2022-11-03 01:46:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:16,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:16,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:16,814 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:16,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 01:46:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:16,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:16,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:17,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:17,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:17,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061924704] [2022-11-03 01:46:17,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061924704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:17,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:17,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:17,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297798073] [2022-11-03 01:46:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:17,021 INFO L87 Difference]: Start difference. First operand 863 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:17,075 INFO L93 Difference]: Finished difference Result 883 states and 1189 transitions. [2022-11-03 01:46:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:17,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2022-11-03 01:46:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:17,078 INFO L225 Difference]: With dead ends: 883 [2022-11-03 01:46:17,078 INFO L226 Difference]: Without dead ends: 883 [2022-11-03 01:46:17,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:17,079 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 28 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:17,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2160 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-11-03 01:46:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 865. [2022-11-03 01:46:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 727 states have (on average 1.3328748280605227) internal successors, (969), 743 states have internal predecessors, (969), 86 states have call successors, (86), 38 states have call predecessors, (86), 51 states have return successors, (114), 83 states have call predecessors, (114), 80 states have call successors, (114) [2022-11-03 01:46:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1169 transitions. [2022-11-03 01:46:17,096 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1169 transitions. Word has length 49 [2022-11-03 01:46:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:17,096 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1169 transitions. [2022-11-03 01:46:17,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:17,096 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1169 transitions. [2022-11-03 01:46:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 01:46:17,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:17,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:17,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:17,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:17,312 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:17,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1443534431, now seen corresponding path program 1 times [2022-11-03 01:46:17,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:17,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358180960] [2022-11-03 01:46:17,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:17,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:17,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:17,315 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:17,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 01:46:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:17,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:17,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:17,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:17,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:17,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358180960] [2022-11-03 01:46:17,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358180960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:17,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:17,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:46:17,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609889231] [2022-11-03 01:46:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:17,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:46:17,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:46:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:17,611 INFO L87 Difference]: Start difference. First operand 865 states and 1169 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:17,895 INFO L93 Difference]: Finished difference Result 933 states and 1246 transitions. [2022-11-03 01:46:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:46:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2022-11-03 01:46:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:17,898 INFO L225 Difference]: With dead ends: 933 [2022-11-03 01:46:17,898 INFO L226 Difference]: Without dead ends: 920 [2022-11-03 01:46:17,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:46:17,899 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 33 mSDsluCounter, 4225 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4774 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:17,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4774 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-03 01:46:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 874. [2022-11-03 01:46:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 734 states have (on average 1.3297002724795641) internal successors, (976), 751 states have internal predecessors, (976), 86 states have call successors, (86), 38 states have call predecessors, (86), 53 states have return successors, (120), 84 states have call predecessors, (120), 80 states have call successors, (120) [2022-11-03 01:46:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1182 transitions. [2022-11-03 01:46:17,917 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1182 transitions. Word has length 48 [2022-11-03 01:46:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:17,918 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1182 transitions. [2022-11-03 01:46:17,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1182 transitions. [2022-11-03 01:46:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 01:46:17,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:17,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:17,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:18,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:18,135 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash -642740247, now seen corresponding path program 1 times [2022-11-03 01:46:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:18,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308004629] [2022-11-03 01:46:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:18,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:18,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:18,137 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:18,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 01:46:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:18,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:18,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:18,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:18,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:18,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308004629] [2022-11-03 01:46:18,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308004629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:18,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:18,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397142883] [2022-11-03 01:46:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:18,396 INFO L87 Difference]: Start difference. First operand 874 states and 1182 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:18,662 INFO L93 Difference]: Finished difference Result 889 states and 1197 transitions. [2022-11-03 01:46:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:18,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-11-03 01:46:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:18,665 INFO L225 Difference]: With dead ends: 889 [2022-11-03 01:46:18,665 INFO L226 Difference]: Without dead ends: 872 [2022-11-03 01:46:18,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:18,666 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 62 mSDsluCounter, 4167 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:18,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4704 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:18,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-03 01:46:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-11-03 01:46:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 733 states have (on average 1.3287858117326057) internal successors, (974), 750 states have internal predecessors, (974), 85 states have call successors, (85), 38 states have call predecessors, (85), 53 states have return successors, (119), 83 states have call predecessors, (119), 79 states have call successors, (119) [2022-11-03 01:46:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1178 transitions. [2022-11-03 01:46:18,685 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1178 transitions. Word has length 51 [2022-11-03 01:46:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:18,686 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1178 transitions. [2022-11-03 01:46:18,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1178 transitions. [2022-11-03 01:46:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:46:18,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:18,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:18,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:18,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:18,906 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1448836095, now seen corresponding path program 1 times [2022-11-03 01:46:18,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:18,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553631207] [2022-11-03 01:46:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:18,909 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:18,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 01:46:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:19,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:19,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:19,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:19,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553631207] [2022-11-03 01:46:19,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553631207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:19,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:19,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118973758] [2022-11-03 01:46:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:19,202 INFO L87 Difference]: Start difference. First operand 872 states and 1178 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:19,454 INFO L93 Difference]: Finished difference Result 889 states and 1196 transitions. [2022-11-03 01:46:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-11-03 01:46:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:19,456 INFO L225 Difference]: With dead ends: 889 [2022-11-03 01:46:19,457 INFO L226 Difference]: Without dead ends: 871 [2022-11-03 01:46:19,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:19,457 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 62 mSDsluCounter, 4101 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:19,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4620 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-03 01:46:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 871. [2022-11-03 01:46:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 732 states have (on average 1.3210382513661203) internal successors, (967), 749 states have internal predecessors, (967), 85 states have call successors, (85), 38 states have call predecessors, (85), 53 states have return successors, (119), 83 states have call predecessors, (119), 79 states have call successors, (119) [2022-11-03 01:46:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1171 transitions. [2022-11-03 01:46:19,473 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1171 transitions. Word has length 49 [2022-11-03 01:46:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:19,473 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1171 transitions. [2022-11-03 01:46:19,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1171 transitions. [2022-11-03 01:46:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 01:46:19,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:19,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:19,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:19,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:19,688 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1422191575, now seen corresponding path program 1 times [2022-11-03 01:46:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:19,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302499849] [2022-11-03 01:46:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:19,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:19,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:19,690 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:19,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 01:46:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:19,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:19,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:19,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:19,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:19,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302499849] [2022-11-03 01:46:19,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302499849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:19,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:19,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:19,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787248087] [2022-11-03 01:46:19,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:19,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:46:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:19,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:46:19,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:19,840 INFO L87 Difference]: Start difference. First operand 871 states and 1171 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:19,919 INFO L93 Difference]: Finished difference Result 892 states and 1194 transitions. [2022-11-03 01:46:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:46:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-03 01:46:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:19,922 INFO L225 Difference]: With dead ends: 892 [2022-11-03 01:46:19,922 INFO L226 Difference]: Without dead ends: 892 [2022-11-03 01:46:19,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:19,923 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 39 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:19,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1526 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-03 01:46:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 873. [2022-11-03 01:46:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 734 states have (on average 1.3201634877384196) internal successors, (969), 751 states have internal predecessors, (969), 85 states have call successors, (85), 38 states have call predecessors, (85), 53 states have return successors, (119), 83 states have call predecessors, (119), 79 states have call successors, (119) [2022-11-03 01:46:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1173 transitions. [2022-11-03 01:46:19,951 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1173 transitions. Word has length 48 [2022-11-03 01:46:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:19,951 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1173 transitions. [2022-11-03 01:46:19,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1173 transitions. [2022-11-03 01:46:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 01:46:19,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:19,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:19,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 01:46:20,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:20,165 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:20,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:20,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1288178069, now seen corresponding path program 1 times [2022-11-03 01:46:20,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:20,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022208369] [2022-11-03 01:46:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:20,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:20,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:20,169 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:20,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 01:46:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:20,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:46:20,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:20,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:20,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:20,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022208369] [2022-11-03 01:46:20,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022208369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:20,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:20,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540947511] [2022-11-03 01:46:20,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:20,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:46:20,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:20,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:46:20,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:20,410 INFO L87 Difference]: Start difference. First operand 873 states and 1173 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:20,554 INFO L93 Difference]: Finished difference Result 891 states and 1192 transitions. [2022-11-03 01:46:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-03 01:46:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:20,557 INFO L225 Difference]: With dead ends: 891 [2022-11-03 01:46:20,557 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 01:46:20,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:20,558 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 60 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:20,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3064 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:20,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 01:46:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2022-11-03 01:46:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 731 states have (on average 1.3132694938440492) internal successors, (960), 748 states have internal predecessors, (960), 85 states have call successors, (85), 38 states have call predecessors, (85), 53 states have return successors, (119), 83 states have call predecessors, (119), 79 states have call successors, (119) [2022-11-03 01:46:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1164 transitions. [2022-11-03 01:46:20,574 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1164 transitions. Word has length 48 [2022-11-03 01:46:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:20,574 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1164 transitions. [2022-11-03 01:46:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:46:20,575 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1164 transitions. [2022-11-03 01:46:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:46:20,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:20,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:20,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:20,788 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash 908630671, now seen corresponding path program 1 times [2022-11-03 01:46:20,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:20,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606815111] [2022-11-03 01:46:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:20,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:20,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:20,790 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:20,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 01:46:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:20,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:20,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:21,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:21,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:21,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606815111] [2022-11-03 01:46:21,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606815111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:21,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:21,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659584411] [2022-11-03 01:46:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:21,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:21,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:21,133 INFO L87 Difference]: Start difference. First operand 870 states and 1164 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:21,399 INFO L93 Difference]: Finished difference Result 909 states and 1203 transitions. [2022-11-03 01:46:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-03 01:46:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:21,401 INFO L225 Difference]: With dead ends: 909 [2022-11-03 01:46:21,402 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 01:46:21,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:21,402 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 42 mSDsluCounter, 5071 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5595 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:21,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5595 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 01:46:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 870. [2022-11-03 01:46:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 731 states have (on average 1.3132694938440492) internal successors, (960), 748 states have internal predecessors, (960), 85 states have call successors, (85), 38 states have call predecessors, (85), 53 states have return successors, (118), 83 states have call predecessors, (118), 79 states have call successors, (118) [2022-11-03 01:46:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1163 transitions. [2022-11-03 01:46:21,418 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1163 transitions. Word has length 57 [2022-11-03 01:46:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:21,419 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1163 transitions. [2022-11-03 01:46:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1163 transitions. [2022-11-03 01:46:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:46:21,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:21,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:21,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:21,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:21,633 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1327042800, now seen corresponding path program 1 times [2022-11-03 01:46:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:21,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876189035] [2022-11-03 01:46:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:21,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:21,636 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:21,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 01:46:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:21,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:21,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:21,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:21,942 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:21,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876189035] [2022-11-03 01:46:21,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876189035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:21,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:21,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:46:21,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916817628] [2022-11-03 01:46:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:46:21,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:46:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:21,944 INFO L87 Difference]: Start difference. First operand 870 states and 1163 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:22,215 INFO L93 Difference]: Finished difference Result 928 states and 1225 transitions. [2022-11-03 01:46:22,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:46:22,215 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2022-11-03 01:46:22,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:22,217 INFO L225 Difference]: With dead ends: 928 [2022-11-03 01:46:22,218 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 01:46:22,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:46:22,218 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 33 mSDsluCounter, 4104 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:22,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4639 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 01:46:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 858. [2022-11-03 01:46:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 722 states have (on average 1.314404432132964) internal successors, (949), 738 states have internal predecessors, (949), 84 states have call successors, (84), 38 states have call predecessors, (84), 51 states have return successors, (111), 81 states have call predecessors, (111), 78 states have call successors, (111) [2022-11-03 01:46:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1144 transitions. [2022-11-03 01:46:22,234 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1144 transitions. Word has length 49 [2022-11-03 01:46:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1144 transitions. [2022-11-03 01:46:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1144 transitions. [2022-11-03 01:46:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 01:46:22,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:22,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:22,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-03 01:46:22,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:22,448 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:22,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1096222030, now seen corresponding path program 1 times [2022-11-03 01:46:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212689167] [2022-11-03 01:46:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:22,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:22,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:22,451 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:22,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 01:46:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:22,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:22,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:22,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:22,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:22,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212689167] [2022-11-03 01:46:22,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212689167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:22,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:22,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:22,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807265308] [2022-11-03 01:46:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:22,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:22,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:22,805 INFO L87 Difference]: Start difference. First operand 858 states and 1144 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:23,100 INFO L93 Difference]: Finished difference Result 927 states and 1221 transitions. [2022-11-03 01:46:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:23,101 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-03 01:46:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:23,103 INFO L225 Difference]: With dead ends: 927 [2022-11-03 01:46:23,103 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 01:46:23,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:23,104 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 46 mSDsluCounter, 4615 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5150 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:23,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5150 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 01:46:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 867. [2022-11-03 01:46:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 729 states have (on average 1.3113854595336076) internal successors, (956), 746 states have internal predecessors, (956), 84 states have call successors, (84), 38 states have call predecessors, (84), 53 states have return successors, (116), 82 states have call predecessors, (116), 78 states have call successors, (116) [2022-11-03 01:46:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1156 transitions. [2022-11-03 01:46:23,124 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1156 transitions. Word has length 50 [2022-11-03 01:46:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:23,125 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1156 transitions. [2022-11-03 01:46:23,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1156 transitions. [2022-11-03 01:46:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:46:23,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:23,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:23,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:23,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:23,340 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -692563454, now seen corresponding path program 1 times [2022-11-03 01:46:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:23,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160333057] [2022-11-03 01:46:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:23,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:23,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:23,341 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:23,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-03 01:46:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:23,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:23,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:23,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:23,655 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:23,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160333057] [2022-11-03 01:46:23,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160333057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:23,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:23,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:23,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992552294] [2022-11-03 01:46:23,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:23,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:23,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:23,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:23,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:23,656 INFO L87 Difference]: Start difference. First operand 867 states and 1156 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:23,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:23,951 INFO L93 Difference]: Finished difference Result 927 states and 1220 transitions. [2022-11-03 01:46:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:23,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2022-11-03 01:46:23,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:23,954 INFO L225 Difference]: With dead ends: 927 [2022-11-03 01:46:23,954 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 01:46:23,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:23,955 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 42 mSDsluCounter, 5091 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:23,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5620 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 01:46:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 867. [2022-11-03 01:46:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 729 states have (on average 1.3113854595336076) internal successors, (956), 746 states have internal predecessors, (956), 84 states have call successors, (84), 38 states have call predecessors, (84), 53 states have return successors, (115), 82 states have call predecessors, (115), 78 states have call successors, (115) [2022-11-03 01:46:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1155 transitions. [2022-11-03 01:46:23,971 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1155 transitions. Word has length 49 [2022-11-03 01:46:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:23,971 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1155 transitions. [2022-11-03 01:46:23,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:23,972 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1155 transitions. [2022-11-03 01:46:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 01:46:23,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:23,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:23,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-11-03 01:46:24,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:24,186 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:24,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash 110672091, now seen corresponding path program 1 times [2022-11-03 01:46:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:24,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750288483] [2022-11-03 01:46:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:24,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:24,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:24,189 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:24,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 01:46:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:24,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:24,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:24,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:24,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:24,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750288483] [2022-11-03 01:46:24,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750288483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:24,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:24,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:24,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582756672] [2022-11-03 01:46:24,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:24,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:24,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:24,579 INFO L87 Difference]: Start difference. First operand 867 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:24,872 INFO L93 Difference]: Finished difference Result 927 states and 1219 transitions. [2022-11-03 01:46:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:24,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2022-11-03 01:46:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:24,874 INFO L225 Difference]: With dead ends: 927 [2022-11-03 01:46:24,874 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 01:46:24,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:24,875 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 46 mSDsluCounter, 4602 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:24,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5134 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 01:46:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 867. [2022-11-03 01:46:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 729 states have (on average 1.3113854595336076) internal successors, (956), 746 states have internal predecessors, (956), 84 states have call successors, (84), 38 states have call predecessors, (84), 53 states have return successors, (114), 82 states have call predecessors, (114), 78 states have call successors, (114) [2022-11-03 01:46:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1154 transitions. [2022-11-03 01:46:24,890 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1154 transitions. Word has length 59 [2022-11-03 01:46:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:24,890 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1154 transitions. [2022-11-03 01:46:24,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:24,891 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1154 transitions. [2022-11-03 01:46:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:24,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:24,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:24,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:25,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:25,108 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:25,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1369472507, now seen corresponding path program 1 times [2022-11-03 01:46:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:25,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273721229] [2022-11-03 01:46:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:25,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:25,112 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:25,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 01:46:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:25,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:25,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:25,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:25,463 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:25,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273721229] [2022-11-03 01:46:25,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273721229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:25,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:25,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:25,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304661182] [2022-11-03 01:46:25,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:25,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:25,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:25,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:25,468 INFO L87 Difference]: Start difference. First operand 867 states and 1154 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:25,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:25,766 INFO L93 Difference]: Finished difference Result 927 states and 1218 transitions. [2022-11-03 01:46:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:25,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2022-11-03 01:46:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:25,769 INFO L225 Difference]: With dead ends: 927 [2022-11-03 01:46:25,769 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 01:46:25,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:25,770 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 42 mSDsluCounter, 5139 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5673 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:25,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5673 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:25,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 01:46:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 858. [2022-11-03 01:46:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 722 states have (on average 1.314404432132964) internal successors, (949), 738 states have internal predecessors, (949), 84 states have call successors, (84), 38 states have call predecessors, (84), 51 states have return successors, (111), 81 states have call predecessors, (111), 78 states have call successors, (111) [2022-11-03 01:46:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1144 transitions. [2022-11-03 01:46:25,797 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1144 transitions. Word has length 56 [2022-11-03 01:46:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:25,798 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1144 transitions. [2022-11-03 01:46:25,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1144 transitions. [2022-11-03 01:46:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:25,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:25,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:25,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:26,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:26,015 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash 707219433, now seen corresponding path program 1 times [2022-11-03 01:46:26,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:26,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084989226] [2022-11-03 01:46:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:26,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:26,017 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:26,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-03 01:46:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:26,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:26,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:26,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:26,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:26,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084989226] [2022-11-03 01:46:26,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084989226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:26,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:26,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873721971] [2022-11-03 01:46:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:46:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:46:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:26,387 INFO L87 Difference]: Start difference. First operand 858 states and 1144 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:46:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:26,730 INFO L93 Difference]: Finished difference Result 858 states and 1136 transitions. [2022-11-03 01:46:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:46:26,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2022-11-03 01:46:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:26,732 INFO L225 Difference]: With dead ends: 858 [2022-11-03 01:46:26,732 INFO L226 Difference]: Without dead ends: 858 [2022-11-03 01:46:26,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:26,733 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 488 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:26,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 884 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:46:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-11-03 01:46:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2022-11-03 01:46:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 722 states have (on average 1.3033240997229918) internal successors, (941), 738 states have internal predecessors, (941), 84 states have call successors, (84), 38 states have call predecessors, (84), 51 states have return successors, (111), 81 states have call predecessors, (111), 78 states have call successors, (111) [2022-11-03 01:46:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1136 transitions. [2022-11-03 01:46:26,747 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1136 transitions. Word has length 53 [2022-11-03 01:46:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:26,747 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1136 transitions. [2022-11-03 01:46:26,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:46:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1136 transitions. [2022-11-03 01:46:26,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 01:46:26,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:26,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:26,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:26,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:26,962 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:26,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1303785248, now seen corresponding path program 1 times [2022-11-03 01:46:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:26,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287729912] [2022-11-03 01:46:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:26,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:26,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:26,965 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:26,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 01:46:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:27,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:27,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:27,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:27,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:27,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287729912] [2022-11-03 01:46:27,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287729912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:27,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:27,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776558948] [2022-11-03 01:46:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:27,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:27,198 INFO L87 Difference]: Start difference. First operand 858 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:27,247 INFO L93 Difference]: Finished difference Result 878 states and 1158 transitions. [2022-11-03 01:46:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:27,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-03 01:46:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:27,250 INFO L225 Difference]: With dead ends: 878 [2022-11-03 01:46:27,250 INFO L226 Difference]: Without dead ends: 878 [2022-11-03 01:46:27,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:27,251 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 33 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:27,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2088 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-03 01:46:27,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 860. [2022-11-03 01:46:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 724 states have (on average 1.3024861878453038) internal successors, (943), 739 states have internal predecessors, (943), 84 states have call successors, (84), 38 states have call predecessors, (84), 51 states have return successors, (111), 82 states have call predecessors, (111), 78 states have call successors, (111) [2022-11-03 01:46:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1138 transitions. [2022-11-03 01:46:27,268 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1138 transitions. Word has length 51 [2022-11-03 01:46:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:27,268 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1138 transitions. [2022-11-03 01:46:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1138 transitions. [2022-11-03 01:46:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 01:46:27,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:27,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:27,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:27,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:27,483 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1797533827, now seen corresponding path program 1 times [2022-11-03 01:46:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:27,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260167820] [2022-11-03 01:46:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:27,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:27,485 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:27,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-03 01:46:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:27,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:27,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:27,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:27,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:27,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260167820] [2022-11-03 01:46:27,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260167820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:27,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:27,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679849127] [2022-11-03 01:46:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:27,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:27,687 INFO L87 Difference]: Start difference. First operand 860 states and 1138 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:27,759 INFO L93 Difference]: Finished difference Result 925 states and 1214 transitions. [2022-11-03 01:46:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:27,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-11-03 01:46:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:27,778 INFO L225 Difference]: With dead ends: 925 [2022-11-03 01:46:27,778 INFO L226 Difference]: Without dead ends: 925 [2022-11-03 01:46:27,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:27,779 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 172 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:27,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1496 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:27,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-03 01:46:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 866. [2022-11-03 01:46:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 729 states have (on average 1.3017832647462277) internal successors, (949), 744 states have internal predecessors, (949), 85 states have call successors, (85), 38 states have call predecessors, (85), 51 states have return successors, (112), 83 states have call predecessors, (112), 79 states have call successors, (112) [2022-11-03 01:46:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1146 transitions. [2022-11-03 01:46:27,789 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1146 transitions. Word has length 50 [2022-11-03 01:46:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:27,789 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1146 transitions. [2022-11-03 01:46:27,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1146 transitions. [2022-11-03 01:46:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 01:46:27,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:27,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:27,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:28,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:28,003 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1224915852, now seen corresponding path program 1 times [2022-11-03 01:46:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:28,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790249826] [2022-11-03 01:46:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:28,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:28,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:28,005 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:28,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 01:46:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:28,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:28,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:28,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:28,379 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:28,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790249826] [2022-11-03 01:46:28,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790249826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:28,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:28,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:28,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851255239] [2022-11-03 01:46:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:28,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:28,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:28,380 INFO L87 Difference]: Start difference. First operand 866 states and 1146 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:28,725 INFO L93 Difference]: Finished difference Result 919 states and 1199 transitions. [2022-11-03 01:46:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2022-11-03 01:46:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:28,727 INFO L225 Difference]: With dead ends: 919 [2022-11-03 01:46:28,727 INFO L226 Difference]: Without dead ends: 904 [2022-11-03 01:46:28,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:28,727 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 42 mSDsluCounter, 5083 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5615 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:28,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5615 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:46:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-11-03 01:46:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 864. [2022-11-03 01:46:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 728 states have (on average 1.2994505494505495) internal successors, (946), 743 states have internal predecessors, (946), 84 states have call successors, (84), 38 states have call predecessors, (84), 51 states have return successors, (111), 82 states have call predecessors, (111), 78 states have call successors, (111) [2022-11-03 01:46:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1141 transitions. [2022-11-03 01:46:28,754 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1141 transitions. Word has length 60 [2022-11-03 01:46:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:28,754 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1141 transitions. [2022-11-03 01:46:28,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1141 transitions. [2022-11-03 01:46:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 01:46:28,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:28,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:28,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-03 01:46:28,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:28,969 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:28,970 INFO L85 PathProgramCache]: Analyzing trace with hash -299447701, now seen corresponding path program 1 times [2022-11-03 01:46:28,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:28,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401217410] [2022-11-03 01:46:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:28,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:28,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:28,971 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:28,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-03 01:46:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:29,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:29,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:29,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:29,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:29,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401217410] [2022-11-03 01:46:29,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401217410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:29,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:29,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907998324] [2022-11-03 01:46:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:29,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:29,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:29,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:29,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:29,328 INFO L87 Difference]: Start difference. First operand 864 states and 1141 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:29,612 INFO L93 Difference]: Finished difference Result 916 states and 1193 transitions. [2022-11-03 01:46:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:29,612 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2022-11-03 01:46:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:29,614 INFO L225 Difference]: With dead ends: 916 [2022-11-03 01:46:29,614 INFO L226 Difference]: Without dead ends: 901 [2022-11-03 01:46:29,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:29,615 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 46 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5091 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:29,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5091 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:29,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-03 01:46:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 861. [2022-11-03 01:46:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 726 states have (on average 1.2975206611570247) internal successors, (942), 741 states have internal predecessors, (942), 83 states have call successors, (83), 38 states have call predecessors, (83), 51 states have return successors, (110), 81 states have call predecessors, (110), 77 states have call successors, (110) [2022-11-03 01:46:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1135 transitions. [2022-11-03 01:46:29,629 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1135 transitions. Word has length 51 [2022-11-03 01:46:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:29,629 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1135 transitions. [2022-11-03 01:46:29,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1135 transitions. [2022-11-03 01:46:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:46:29,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:29,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:29,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:29,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:29,844 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1608050986, now seen corresponding path program 1 times [2022-11-03 01:46:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:29,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618078500] [2022-11-03 01:46:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:29,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:29,845 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:29,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 01:46:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:30,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:30,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:30,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:30,188 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:30,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618078500] [2022-11-03 01:46:30,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618078500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:30,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:30,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861297346] [2022-11-03 01:46:30,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:30,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:30,189 INFO L87 Difference]: Start difference. First operand 861 states and 1135 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:30,484 INFO L93 Difference]: Finished difference Result 913 states and 1187 transitions. [2022-11-03 01:46:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:30,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-03 01:46:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:30,487 INFO L225 Difference]: With dead ends: 913 [2022-11-03 01:46:30,487 INFO L226 Difference]: Without dead ends: 887 [2022-11-03 01:46:30,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:30,488 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 46 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:30,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5057 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-03 01:46:30,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 843. [2022-11-03 01:46:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 711 states have (on average 1.2939521800281295) internal successors, (920), 725 states have internal predecessors, (920), 80 states have call successors, (80), 38 states have call predecessors, (80), 51 states have return successors, (105), 79 states have call predecessors, (105), 74 states have call successors, (105) [2022-11-03 01:46:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1105 transitions. [2022-11-03 01:46:30,507 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1105 transitions. Word has length 57 [2022-11-03 01:46:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:30,507 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1105 transitions. [2022-11-03 01:46:30,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1105 transitions. [2022-11-03 01:46:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 01:46:30,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:30,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:30,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:30,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:30,722 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1170886567, now seen corresponding path program 1 times [2022-11-03 01:46:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:30,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139027378] [2022-11-03 01:46:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:30,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:30,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:30,724 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:30,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-03 01:46:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:30,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:30,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:31,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:31,055 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:31,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139027378] [2022-11-03 01:46:31,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139027378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:31,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:31,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652323039] [2022-11-03 01:46:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:31,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:31,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:31,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:31,057 INFO L87 Difference]: Start difference. First operand 843 states and 1105 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:31,347 INFO L93 Difference]: Finished difference Result 895 states and 1157 transitions. [2022-11-03 01:46:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-03 01:46:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:31,350 INFO L225 Difference]: With dead ends: 895 [2022-11-03 01:46:31,350 INFO L226 Difference]: Without dead ends: 878 [2022-11-03 01:46:31,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:31,350 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 42 mSDsluCounter, 4833 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:31,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5332 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-03 01:46:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 829. [2022-11-03 01:46:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 700 states have (on average 1.2957142857142858) internal successors, (907), 713 states have internal predecessors, (907), 79 states have call successors, (79), 38 states have call predecessors, (79), 49 states have return successors, (102), 77 states have call predecessors, (102), 73 states have call successors, (102) [2022-11-03 01:46:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1088 transitions. [2022-11-03 01:46:31,364 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1088 transitions. Word has length 50 [2022-11-03 01:46:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:31,364 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1088 transitions. [2022-11-03 01:46:31,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1088 transitions. [2022-11-03 01:46:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 01:46:31,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:31,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:31,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:31,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:31,579 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1007488154, now seen corresponding path program 1 times [2022-11-03 01:46:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:31,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704515056] [2022-11-03 01:46:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:31,581 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:31,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-03 01:46:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:31,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:31,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:31,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:31,812 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:31,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704515056] [2022-11-03 01:46:31,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704515056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:31,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:31,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170795342] [2022-11-03 01:46:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:31,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:31,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:31,814 INFO L87 Difference]: Start difference. First operand 829 states and 1088 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:31,934 INFO L93 Difference]: Finished difference Result 845 states and 1102 transitions. [2022-11-03 01:46:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2022-11-03 01:46:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:31,940 INFO L225 Difference]: With dead ends: 845 [2022-11-03 01:46:31,940 INFO L226 Difference]: Without dead ends: 845 [2022-11-03 01:46:31,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:31,941 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 41 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:31,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2396 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-11-03 01:46:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 829. [2022-11-03 01:46:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 700 states have (on average 1.2914285714285714) internal successors, (904), 713 states have internal predecessors, (904), 79 states have call successors, (79), 38 states have call predecessors, (79), 49 states have return successors, (102), 77 states have call predecessors, (102), 73 states have call successors, (102) [2022-11-03 01:46:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1085 transitions. [2022-11-03 01:46:31,962 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1085 transitions. Word has length 51 [2022-11-03 01:46:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:31,962 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1085 transitions. [2022-11-03 01:46:31,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1085 transitions. [2022-11-03 01:46:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 01:46:31,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:31,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:31,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:32,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:32,178 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:32,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1141501660, now seen corresponding path program 1 times [2022-11-03 01:46:32,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:32,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347715297] [2022-11-03 01:46:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:32,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:32,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:32,180 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:32,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 01:46:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:32,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:32,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:32,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:32,442 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:32,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347715297] [2022-11-03 01:46:32,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347715297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:32,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:32,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389457742] [2022-11-03 01:46:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:32,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:32,443 INFO L87 Difference]: Start difference. First operand 829 states and 1085 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:32,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:32,645 INFO L93 Difference]: Finished difference Result 844 states and 1100 transitions. [2022-11-03 01:46:32,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:32,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2022-11-03 01:46:32,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:32,647 INFO L225 Difference]: With dead ends: 844 [2022-11-03 01:46:32,648 INFO L226 Difference]: Without dead ends: 825 [2022-11-03 01:46:32,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:32,648 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 62 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:32,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3804 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-03 01:46:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 819. [2022-11-03 01:46:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 692 states have (on average 1.2933526011560694) internal successors, (895), 705 states have internal predecessors, (895), 77 states have call successors, (77), 38 states have call predecessors, (77), 49 states have return successors, (100), 75 states have call predecessors, (100), 71 states have call successors, (100) [2022-11-03 01:46:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1072 transitions. [2022-11-03 01:46:32,661 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1072 transitions. Word has length 51 [2022-11-03 01:46:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:32,661 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1072 transitions. [2022-11-03 01:46:32,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1072 transitions. [2022-11-03 01:46:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 01:46:32,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:32,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:32,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:32,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:32,875 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:32,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash 121557198, now seen corresponding path program 1 times [2022-11-03 01:46:32,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:32,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437602534] [2022-11-03 01:46:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:32,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:32,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:32,877 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:32,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-03 01:46:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:33,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:33,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:33,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:33,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:33,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437602534] [2022-11-03 01:46:33,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437602534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:33,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:33,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:33,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016587929] [2022-11-03 01:46:33,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:33,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:46:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:33,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:46:33,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:33,187 INFO L87 Difference]: Start difference. First operand 819 states and 1072 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:46:33,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:33,484 INFO L93 Difference]: Finished difference Result 843 states and 1098 transitions. [2022-11-03 01:46:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:46:33,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2022-11-03 01:46:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:33,486 INFO L225 Difference]: With dead ends: 843 [2022-11-03 01:46:33,487 INFO L226 Difference]: Without dead ends: 842 [2022-11-03 01:46:33,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:33,487 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 583 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:33,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 862 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:46:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-03 01:46:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 805. [2022-11-03 01:46:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 680 states have (on average 1.2897058823529413) internal successors, (877), 693 states have internal predecessors, (877), 77 states have call successors, (77), 38 states have call predecessors, (77), 47 states have return successors, (98), 73 states have call predecessors, (98), 71 states have call successors, (98) [2022-11-03 01:46:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1052 transitions. [2022-11-03 01:46:33,499 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1052 transitions. Word has length 55 [2022-11-03 01:46:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:33,500 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1052 transitions. [2022-11-03 01:46:33,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:46:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1052 transitions. [2022-11-03 01:46:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 01:46:33,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:33,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:33,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:33,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:33,713 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash 445712646, now seen corresponding path program 1 times [2022-11-03 01:46:33,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:33,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060951715] [2022-11-03 01:46:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:33,715 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:33,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 01:46:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:33,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:33,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:33,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:33,882 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:33,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060951715] [2022-11-03 01:46:33,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060951715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:33,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:33,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521518833] [2022-11-03 01:46:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:33,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:33,884 INFO L87 Difference]: Start difference. First operand 805 states and 1052 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:33,988 INFO L93 Difference]: Finished difference Result 826 states and 1075 transitions. [2022-11-03 01:46:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:33,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2022-11-03 01:46:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:33,990 INFO L225 Difference]: With dead ends: 826 [2022-11-03 01:46:33,990 INFO L226 Difference]: Without dead ends: 826 [2022-11-03 01:46:33,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:33,991 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 23 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:33,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1919 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-03 01:46:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 805. [2022-11-03 01:46:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 680 states have (on average 1.2882352941176471) internal successors, (876), 693 states have internal predecessors, (876), 77 states have call successors, (77), 38 states have call predecessors, (77), 47 states have return successors, (98), 73 states have call predecessors, (98), 71 states have call successors, (98) [2022-11-03 01:46:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1051 transitions. [2022-11-03 01:46:34,002 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1051 transitions. Word has length 52 [2022-11-03 01:46:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:34,002 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1051 transitions. [2022-11-03 01:46:34,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1051 transitions. [2022-11-03 01:46:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:34,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:34,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:34,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Ended with exit code 0 [2022-11-03 01:46:34,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:34,217 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -765246994, now seen corresponding path program 1 times [2022-11-03 01:46:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:34,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776564786] [2022-11-03 01:46:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:34,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:34,219 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:34,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-03 01:46:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:34,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:34,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:34,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:34,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:34,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776564786] [2022-11-03 01:46:34,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776564786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:34,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:34,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597390941] [2022-11-03 01:46:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:34,434 INFO L87 Difference]: Start difference. First operand 805 states and 1051 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:46:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:34,452 INFO L93 Difference]: Finished difference Result 883 states and 1149 transitions. [2022-11-03 01:46:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-11-03 01:46:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:34,455 INFO L225 Difference]: With dead ends: 883 [2022-11-03 01:46:34,455 INFO L226 Difference]: Without dead ends: 883 [2022-11-03 01:46:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:34,456 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 102 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:34,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 989 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-11-03 01:46:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 850. [2022-11-03 01:46:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 718 states have (on average 1.2841225626740946) internal successors, (922), 732 states have internal predecessors, (922), 78 states have call successors, (78), 40 states have call predecessors, (78), 53 states have return successors, (104), 77 states have call predecessors, (104), 73 states have call successors, (104) [2022-11-03 01:46:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1104 transitions. [2022-11-03 01:46:34,471 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1104 transitions. Word has length 56 [2022-11-03 01:46:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:34,471 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1104 transitions. [2022-11-03 01:46:34,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:46:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1104 transitions. [2022-11-03 01:46:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:34,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:34,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:34,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:34,686 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1308862555, now seen corresponding path program 1 times [2022-11-03 01:46:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:34,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153670188] [2022-11-03 01:46:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:34,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:34,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:34,688 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:34,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 01:46:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:34,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:34,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:34,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:34,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:34,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153670188] [2022-11-03 01:46:34,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153670188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:34,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:34,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:34,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993595459] [2022-11-03 01:46:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:34,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:46:34,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:46:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:46:34,832 INFO L87 Difference]: Start difference. First operand 850 states and 1104 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:34,889 INFO L93 Difference]: Finished difference Result 871 states and 1127 transitions. [2022-11-03 01:46:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:46:34,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-11-03 01:46:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:34,891 INFO L225 Difference]: With dead ends: 871 [2022-11-03 01:46:34,891 INFO L226 Difference]: Without dead ends: 871 [2022-11-03 01:46:34,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:34,891 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 39 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:34,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1414 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-03 01:46:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 852. [2022-11-03 01:46:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 720 states have (on average 1.2833333333333334) internal successors, (924), 734 states have internal predecessors, (924), 78 states have call successors, (78), 40 states have call predecessors, (78), 53 states have return successors, (104), 77 states have call predecessors, (104), 73 states have call successors, (104) [2022-11-03 01:46:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1106 transitions. [2022-11-03 01:46:34,905 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1106 transitions. Word has length 53 [2022-11-03 01:46:34,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:34,905 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1106 transitions. [2022-11-03 01:46:34,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1106 transitions. [2022-11-03 01:46:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:34,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:34,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:34,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-03 01:46:35,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:35,119 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:35,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1442876061, now seen corresponding path program 1 times [2022-11-03 01:46:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:35,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854584232] [2022-11-03 01:46:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:35,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:35,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:35,121 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:35,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 01:46:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:35,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:46:35,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:35,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:35,370 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854584232] [2022-11-03 01:46:35,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854584232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:35,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:35,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99170441] [2022-11-03 01:46:35,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:35,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:46:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:46:35,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:35,373 INFO L87 Difference]: Start difference. First operand 852 states and 1106 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:35,537 INFO L93 Difference]: Finished difference Result 870 states and 1125 transitions. [2022-11-03 01:46:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:35,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-11-03 01:46:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:35,538 INFO L225 Difference]: With dead ends: 870 [2022-11-03 01:46:35,539 INFO L226 Difference]: Without dead ends: 850 [2022-11-03 01:46:35,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:35,539 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 60 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:35,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2829 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-03 01:46:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 848. [2022-11-03 01:46:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 716 states have (on average 1.2835195530726258) internal successors, (919), 731 states have internal predecessors, (919), 78 states have call successors, (78), 40 states have call predecessors, (78), 53 states have return successors, (104), 76 states have call predecessors, (104), 73 states have call successors, (104) [2022-11-03 01:46:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1101 transitions. [2022-11-03 01:46:35,552 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1101 transitions. Word has length 53 [2022-11-03 01:46:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:35,553 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1101 transitions. [2022-11-03 01:46:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1101 transitions. [2022-11-03 01:46:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:35,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:35,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:35,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-03 01:46:35,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:35,768 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:35,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash 820450658, now seen corresponding path program 1 times [2022-11-03 01:46:35,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:35,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280970688] [2022-11-03 01:46:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:35,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:35,769 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:35,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-03 01:46:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:35,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:35,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:35,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:35,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:35,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280970688] [2022-11-03 01:46:35,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280970688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:35,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:35,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:35,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50558673] [2022-11-03 01:46:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:35,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:35,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:35,948 INFO L87 Difference]: Start difference. First operand 848 states and 1101 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:36,076 INFO L93 Difference]: Finished difference Result 869 states and 1124 transitions. [2022-11-03 01:46:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:36,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-11-03 01:46:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:36,078 INFO L225 Difference]: With dead ends: 869 [2022-11-03 01:46:36,078 INFO L226 Difference]: Without dead ends: 869 [2022-11-03 01:46:36,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:36,079 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 45 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:36,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2374 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-03 01:46:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 848. [2022-11-03 01:46:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 716 states have (on average 1.282122905027933) internal successors, (918), 731 states have internal predecessors, (918), 78 states have call successors, (78), 40 states have call predecessors, (78), 53 states have return successors, (104), 76 states have call predecessors, (104), 73 states have call successors, (104) [2022-11-03 01:46:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1100 transitions. [2022-11-03 01:46:36,092 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1100 transitions. Word has length 53 [2022-11-03 01:46:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:36,092 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1100 transitions. [2022-11-03 01:46:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1100 transitions. [2022-11-03 01:46:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:36,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:36,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:36,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:36,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:36,294 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 882490272, now seen corresponding path program 1 times [2022-11-03 01:46:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:36,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990778600] [2022-11-03 01:46:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:36,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:36,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:36,295 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:36,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-03 01:46:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:36,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:36,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:36,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:36,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:36,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990778600] [2022-11-03 01:46:36,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990778600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:36,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:36,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110155511] [2022-11-03 01:46:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:36,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:36,496 INFO L87 Difference]: Start difference. First operand 848 states and 1100 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:36,624 INFO L93 Difference]: Finished difference Result 869 states and 1123 transitions. [2022-11-03 01:46:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:36,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-11-03 01:46:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:36,626 INFO L225 Difference]: With dead ends: 869 [2022-11-03 01:46:36,626 INFO L226 Difference]: Without dead ends: 869 [2022-11-03 01:46:36,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:36,626 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 39 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:36,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2369 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-03 01:46:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 850. [2022-11-03 01:46:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 718 states have (on average 1.2813370473537604) internal successors, (920), 733 states have internal predecessors, (920), 78 states have call successors, (78), 40 states have call predecessors, (78), 53 states have return successors, (104), 76 states have call predecessors, (104), 73 states have call successors, (104) [2022-11-03 01:46:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1102 transitions. [2022-11-03 01:46:36,649 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1102 transitions. Word has length 53 [2022-11-03 01:46:36,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:36,650 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1102 transitions. [2022-11-03 01:46:36,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1102 transitions. [2022-11-03 01:46:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:36,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:36,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:36,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:36,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:36,859 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 748476766, now seen corresponding path program 1 times [2022-11-03 01:46:36,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:36,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39354096] [2022-11-03 01:46:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:36,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:36,861 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:36,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 01:46:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:37,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:37,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:37,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:37,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:37,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39354096] [2022-11-03 01:46:37,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39354096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:37,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:37,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48995211] [2022-11-03 01:46:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:37,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:37,118 INFO L87 Difference]: Start difference. First operand 850 states and 1102 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:37,345 INFO L93 Difference]: Finished difference Result 868 states and 1121 transitions. [2022-11-03 01:46:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-11-03 01:46:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:37,348 INFO L225 Difference]: With dead ends: 868 [2022-11-03 01:46:37,348 INFO L226 Difference]: Without dead ends: 842 [2022-11-03 01:46:37,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:37,348 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 60 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:37,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3756 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-03 01:46:37,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2022-11-03 01:46:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 711 states have (on average 1.2812939521800282) internal successors, (911), 726 states have internal predecessors, (911), 77 states have call successors, (77), 40 states have call predecessors, (77), 53 states have return successors, (103), 75 states have call predecessors, (103), 72 states have call successors, (103) [2022-11-03 01:46:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1091 transitions. [2022-11-03 01:46:37,362 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1091 transitions. Word has length 53 [2022-11-03 01:46:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:37,363 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1091 transitions. [2022-11-03 01:46:37,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1091 transitions. [2022-11-03 01:46:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:37,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:37,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:37,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:37,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:37,579 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1994228703, now seen corresponding path program 1 times [2022-11-03 01:46:37,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008376658] [2022-11-03 01:46:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:37,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:37,580 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:37,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 01:46:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:37,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:37,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:37,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:37,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:37,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008376658] [2022-11-03 01:46:37,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008376658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:37,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:37,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:37,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930870698] [2022-11-03 01:46:37,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:37,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:37,746 INFO L87 Difference]: Start difference. First operand 842 states and 1091 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:37,845 INFO L93 Difference]: Finished difference Result 851 states and 1095 transitions. [2022-11-03 01:46:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-11-03 01:46:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:37,847 INFO L225 Difference]: With dead ends: 851 [2022-11-03 01:46:37,847 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:46:37,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:37,847 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 39 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:37,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2255 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:46:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 835. [2022-11-03 01:46:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 706 states have (on average 1.2776203966005666) internal successors, (902), 721 states have internal predecessors, (902), 75 states have call successors, (75), 40 states have call predecessors, (75), 53 states have return successors, (101), 73 states have call predecessors, (101), 70 states have call successors, (101) [2022-11-03 01:46:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1078 transitions. [2022-11-03 01:46:37,860 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1078 transitions. Word has length 53 [2022-11-03 01:46:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:37,860 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1078 transitions. [2022-11-03 01:46:37,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1078 transitions. [2022-11-03 01:46:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:37,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:37,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:37,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:38,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:38,075 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1860215197, now seen corresponding path program 1 times [2022-11-03 01:46:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:38,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457940403] [2022-11-03 01:46:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:38,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:38,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:38,078 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:38,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-03 01:46:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:38,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:38,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:38,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:38,315 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:38,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457940403] [2022-11-03 01:46:38,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457940403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:38,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:38,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404060397] [2022-11-03 01:46:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:38,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:38,316 INFO L87 Difference]: Start difference. First operand 835 states and 1078 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:38,484 INFO L93 Difference]: Finished difference Result 850 states and 1093 transitions. [2022-11-03 01:46:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:38,484 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-11-03 01:46:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:38,486 INFO L225 Difference]: With dead ends: 850 [2022-11-03 01:46:38,486 INFO L226 Difference]: Without dead ends: 825 [2022-11-03 01:46:38,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:38,486 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 60 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3569 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:38,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3569 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:38,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-03 01:46:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2022-11-03 01:46:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 698 states have (on average 1.2779369627507164) internal successors, (892), 713 states have internal predecessors, (892), 73 states have call successors, (73), 40 states have call predecessors, (73), 53 states have return successors, (98), 71 states have call predecessors, (98), 68 states have call successors, (98) [2022-11-03 01:46:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1063 transitions. [2022-11-03 01:46:38,497 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1063 transitions. Word has length 53 [2022-11-03 01:46:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:38,497 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1063 transitions. [2022-11-03 01:46:38,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1063 transitions. [2022-11-03 01:46:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:46:38,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:38,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:38,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:38,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:38,711 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:38,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash 953754427, now seen corresponding path program 1 times [2022-11-03 01:46:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:38,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594292409] [2022-11-03 01:46:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:38,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:38,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:38,719 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:38,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-03 01:46:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:38,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:38,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:39,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:39,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:39,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594292409] [2022-11-03 01:46:39,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594292409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:39,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:39,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168113652] [2022-11-03 01:46:39,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:39,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:39,093 INFO L87 Difference]: Start difference. First operand 825 states and 1063 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:39,337 INFO L93 Difference]: Finished difference Result 834 states and 1070 transitions. [2022-11-03 01:46:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:46:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2022-11-03 01:46:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:39,339 INFO L225 Difference]: With dead ends: 834 [2022-11-03 01:46:39,339 INFO L226 Difference]: Without dead ends: 834 [2022-11-03 01:46:39,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:39,340 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 464 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:39,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 765 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-11-03 01:46:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 825. [2022-11-03 01:46:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 698 states have (on average 1.2750716332378222) internal successors, (890), 713 states have internal predecessors, (890), 73 states have call successors, (73), 40 states have call predecessors, (73), 53 states have return successors, (98), 71 states have call predecessors, (98), 68 states have call successors, (98) [2022-11-03 01:46:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1061 transitions. [2022-11-03 01:46:39,349 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1061 transitions. Word has length 53 [2022-11-03 01:46:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:39,350 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1061 transitions. [2022-11-03 01:46:39,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1061 transitions. [2022-11-03 01:46:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 01:46:39,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:39,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:39,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-03 01:46:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:39,558 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash -507761203, now seen corresponding path program 1 times [2022-11-03 01:46:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:39,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609453044] [2022-11-03 01:46:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:39,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:39,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:39,559 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:39,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 01:46:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:39,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:46:39,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:39,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:39,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:39,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609453044] [2022-11-03 01:46:39,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609453044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:39,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:39,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:39,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467097137] [2022-11-03 01:46:39,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:39,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:39,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:39,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:39,796 INFO L87 Difference]: Start difference. First operand 825 states and 1061 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:40,022 INFO L93 Difference]: Finished difference Result 842 states and 1079 transitions. [2022-11-03 01:46:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-03 01:46:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:40,023 INFO L225 Difference]: With dead ends: 842 [2022-11-03 01:46:40,023 INFO L226 Difference]: Without dead ends: 825 [2022-11-03 01:46:40,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:46:40,024 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 62 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:40,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3836 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:40,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-03 01:46:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 817. [2022-11-03 01:46:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 692 states have (on average 1.2745664739884393) internal successors, (882), 707 states have internal predecessors, (882), 73 states have call successors, (73), 40 states have call predecessors, (73), 51 states have return successors, (90), 69 states have call predecessors, (90), 68 states have call successors, (90) [2022-11-03 01:46:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1045 transitions. [2022-11-03 01:46:40,036 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1045 transitions. Word has length 55 [2022-11-03 01:46:40,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:40,036 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1045 transitions. [2022-11-03 01:46:40,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1045 transitions. [2022-11-03 01:46:40,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 01:46:40,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:40,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:40,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-03 01:46:40,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:40,251 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1347488490, now seen corresponding path program 1 times [2022-11-03 01:46:40,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:40,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800145047] [2022-11-03 01:46:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:40,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:40,253 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:40,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 01:46:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:40,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:40,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:40,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:40,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:40,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800145047] [2022-11-03 01:46:40,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800145047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:40,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:40,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:40,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202023144] [2022-11-03 01:46:40,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:40,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:40,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:40,522 INFO L87 Difference]: Start difference. First operand 817 states and 1045 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:40,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:40,822 INFO L93 Difference]: Finished difference Result 834 states and 1063 transitions. [2022-11-03 01:46:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:40,822 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-03 01:46:40,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:40,824 INFO L225 Difference]: With dead ends: 834 [2022-11-03 01:46:40,824 INFO L226 Difference]: Without dead ends: 813 [2022-11-03 01:46:40,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:46:40,824 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 62 mSDsluCounter, 4309 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:40,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4754 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-03 01:46:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2022-11-03 01:46:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 689 states have (on average 1.274310595065312) internal successors, (878), 704 states have internal predecessors, (878), 72 states have call successors, (72), 40 states have call predecessors, (72), 51 states have return successors, (89), 68 states have call predecessors, (89), 67 states have call successors, (89) [2022-11-03 01:46:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1039 transitions. [2022-11-03 01:46:40,834 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1039 transitions. Word has length 55 [2022-11-03 01:46:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:40,834 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1039 transitions. [2022-11-03 01:46:40,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1039 transitions. [2022-11-03 01:46:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:46:40,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:40,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:40,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2022-11-03 01:46:41,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:41,039 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:41,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2057071680, now seen corresponding path program 1 times [2022-11-03 01:46:41,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87648798] [2022-11-03 01:46:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:41,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:41,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:41,041 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:41,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 01:46:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:41,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:41,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:41,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:41,224 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:41,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87648798] [2022-11-03 01:46:41,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87648798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:41,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:41,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519210677] [2022-11-03 01:46:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:41,226 INFO L87 Difference]: Start difference. First operand 813 states and 1039 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:41,306 INFO L93 Difference]: Finished difference Result 834 states and 1062 transitions. [2022-11-03 01:46:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:41,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-11-03 01:46:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:41,308 INFO L225 Difference]: With dead ends: 834 [2022-11-03 01:46:41,308 INFO L226 Difference]: Without dead ends: 834 [2022-11-03 01:46:41,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:41,308 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 22 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:41,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1750 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-11-03 01:46:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 813. [2022-11-03 01:46:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 689 states have (on average 1.2728592162554426) internal successors, (877), 704 states have internal predecessors, (877), 72 states have call successors, (72), 40 states have call predecessors, (72), 51 states have return successors, (89), 68 states have call predecessors, (89), 67 states have call successors, (89) [2022-11-03 01:46:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1038 transitions. [2022-11-03 01:46:41,320 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1038 transitions. Word has length 54 [2022-11-03 01:46:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:41,320 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1038 transitions. [2022-11-03 01:46:41,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1038 transitions. [2022-11-03 01:46:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:46:41,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:41,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:41,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:41,535 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2119111294, now seen corresponding path program 1 times [2022-11-03 01:46:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871920182] [2022-11-03 01:46:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:41,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:41,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:41,537 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:41,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-03 01:46:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:41,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:41,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:41,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:41,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871920182] [2022-11-03 01:46:41,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871920182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:41,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:41,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:41,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368811737] [2022-11-03 01:46:41,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:41,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:41,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:41,733 INFO L87 Difference]: Start difference. First operand 813 states and 1038 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:41,837 INFO L93 Difference]: Finished difference Result 834 states and 1061 transitions. [2022-11-03 01:46:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:41,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-11-03 01:46:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:41,839 INFO L225 Difference]: With dead ends: 834 [2022-11-03 01:46:41,839 INFO L226 Difference]: Without dead ends: 834 [2022-11-03 01:46:41,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:41,839 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 39 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:41,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2172 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-11-03 01:46:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 815. [2022-11-03 01:46:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 691 states have (on average 1.2720694645441388) internal successors, (879), 706 states have internal predecessors, (879), 72 states have call successors, (72), 40 states have call predecessors, (72), 51 states have return successors, (89), 68 states have call predecessors, (89), 67 states have call successors, (89) [2022-11-03 01:46:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1040 transitions. [2022-11-03 01:46:41,851 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1040 transitions. Word has length 54 [2022-11-03 01:46:41,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:41,851 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1040 transitions. [2022-11-03 01:46:41,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:41,851 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1040 transitions. [2022-11-03 01:46:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:46:41,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:41,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:41,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:42,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:42,066 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:42,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1985097788, now seen corresponding path program 1 times [2022-11-03 01:46:42,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:42,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470314702] [2022-11-03 01:46:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:42,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:42,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:42,067 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:42,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-03 01:46:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:42,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:42,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:42,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:42,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470314702] [2022-11-03 01:46:42,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470314702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:42,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:42,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609285802] [2022-11-03 01:46:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:42,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:42,293 INFO L87 Difference]: Start difference. First operand 815 states and 1040 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:42,455 INFO L93 Difference]: Finished difference Result 833 states and 1059 transitions. [2022-11-03 01:46:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:42,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-11-03 01:46:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:42,457 INFO L225 Difference]: With dead ends: 833 [2022-11-03 01:46:42,457 INFO L226 Difference]: Without dead ends: 808 [2022-11-03 01:46:42,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:42,457 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 60 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:42,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3438 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-03 01:46:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-03 01:46:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 685 states have (on average 1.2715328467153284) internal successors, (871), 700 states have internal predecessors, (871), 71 states have call successors, (71), 40 states have call predecessors, (71), 51 states have return successors, (88), 67 states have call predecessors, (88), 66 states have call successors, (88) [2022-11-03 01:46:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1030 transitions. [2022-11-03 01:46:42,465 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1030 transitions. Word has length 54 [2022-11-03 01:46:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:42,465 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1030 transitions. [2022-11-03 01:46:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1030 transitions. [2022-11-03 01:46:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:46:42,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:42,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:42,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-03 01:46:42,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:42,667 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:42,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1301879028, now seen corresponding path program 1 times [2022-11-03 01:46:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:42,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457290879] [2022-11-03 01:46:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:42,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:42,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:42,669 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:42,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-03 01:46:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:42,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:42,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:42,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:42,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:42,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457290879] [2022-11-03 01:46:42,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457290879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:42,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:42,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:42,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500106636] [2022-11-03 01:46:42,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:42,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:42,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:42,837 INFO L87 Difference]: Start difference. First operand 808 states and 1030 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:42,932 INFO L93 Difference]: Finished difference Result 829 states and 1053 transitions. [2022-11-03 01:46:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:42,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-11-03 01:46:42,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:42,934 INFO L225 Difference]: With dead ends: 829 [2022-11-03 01:46:42,935 INFO L226 Difference]: Without dead ends: 829 [2022-11-03 01:46:42,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:42,935 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 39 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:42,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2144 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-03 01:46:42,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 810. [2022-11-03 01:46:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 687 states have (on average 1.2707423580786026) internal successors, (873), 702 states have internal predecessors, (873), 71 states have call successors, (71), 40 states have call predecessors, (71), 51 states have return successors, (88), 67 states have call predecessors, (88), 66 states have call successors, (88) [2022-11-03 01:46:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1032 transitions. [2022-11-03 01:46:42,946 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1032 transitions. Word has length 54 [2022-11-03 01:46:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:42,947 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 1032 transitions. [2022-11-03 01:46:42,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1032 transitions. [2022-11-03 01:46:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:46:42,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:42,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:42,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-03 01:46:43,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:43,151 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1435892534, now seen corresponding path program 1 times [2022-11-03 01:46:43,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:43,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594931405] [2022-11-03 01:46:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:43,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:43,153 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:43,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-03 01:46:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:43,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:43,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:43,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:43,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:43,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594931405] [2022-11-03 01:46:43,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594931405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:43,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:43,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:43,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282908404] [2022-11-03 01:46:43,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:43,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:43,377 INFO L87 Difference]: Start difference. First operand 810 states and 1032 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:43,532 INFO L93 Difference]: Finished difference Result 828 states and 1051 transitions. [2022-11-03 01:46:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-11-03 01:46:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:43,534 INFO L225 Difference]: With dead ends: 828 [2022-11-03 01:46:43,534 INFO L226 Difference]: Without dead ends: 805 [2022-11-03 01:46:43,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:43,535 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 60 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:43,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3392 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-11-03 01:46:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-11-03 01:46:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 683 states have (on average 1.2693997071742313) internal successors, (867), 698 states have internal predecessors, (867), 70 states have call successors, (70), 40 states have call predecessors, (70), 51 states have return successors, (87), 66 states have call predecessors, (87), 65 states have call successors, (87) [2022-11-03 01:46:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1024 transitions. [2022-11-03 01:46:43,543 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1024 transitions. Word has length 54 [2022-11-03 01:46:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:43,543 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1024 transitions. [2022-11-03 01:46:43,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1024 transitions. [2022-11-03 01:46:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 01:46:43,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:43,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:43,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2022-11-03 01:46:43,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:43,747 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1137798806, now seen corresponding path program 1 times [2022-11-03 01:46:43,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:43,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655632451] [2022-11-03 01:46:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:43,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:43,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:43,749 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:43,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-03 01:46:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:43,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:46:43,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:43,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:43,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655632451] [2022-11-03 01:46:43,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655632451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:43,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:43,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818810025] [2022-11-03 01:46:43,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:43,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:44,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:44,000 INFO L87 Difference]: Start difference. First operand 805 states and 1024 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:44,190 INFO L93 Difference]: Finished difference Result 885 states and 1115 transitions. [2022-11-03 01:46:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:44,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-11-03 01:46:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:44,192 INFO L225 Difference]: With dead ends: 885 [2022-11-03 01:46:44,192 INFO L226 Difference]: Without dead ends: 834 [2022-11-03 01:46:44,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:46:44,192 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 95 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:44,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 3212 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-11-03 01:46:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 815. [2022-11-03 01:46:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 692 states have (on average 1.2557803468208093) internal successors, (869), 707 states have internal predecessors, (869), 70 states have call successors, (70), 40 states have call predecessors, (70), 52 states have return successors, (88), 67 states have call predecessors, (88), 65 states have call successors, (88) [2022-11-03 01:46:44,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1027 transitions. [2022-11-03 01:46:44,201 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1027 transitions. Word has length 54 [2022-11-03 01:46:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:44,201 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1027 transitions. [2022-11-03 01:46:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1027 transitions. [2022-11-03 01:46:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 01:46:44,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:44,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:44,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2022-11-03 01:46:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:44,415 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:44,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1335081080, now seen corresponding path program 1 times [2022-11-03 01:46:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:44,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840950941] [2022-11-03 01:46:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:44,417 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:44,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-03 01:46:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:44,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:44,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:44,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:44,701 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840950941] [2022-11-03 01:46:44,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840950941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:44,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:44,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:44,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174454954] [2022-11-03 01:46:44,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:44,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:44,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:44,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:44,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:44,702 INFO L87 Difference]: Start difference. First operand 815 states and 1027 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:46:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:44,984 INFO L93 Difference]: Finished difference Result 829 states and 1039 transitions. [2022-11-03 01:46:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:44,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2022-11-03 01:46:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:44,986 INFO L225 Difference]: With dead ends: 829 [2022-11-03 01:46:44,986 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:46:44,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:46:44,987 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 62 mSDsluCounter, 4070 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4490 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:44,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4490 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:46:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2022-11-03 01:46:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 684 states have (on average 1.2529239766081872) internal successors, (857), 698 states have internal predecessors, (857), 66 states have call successors, (66), 40 states have call predecessors, (66), 52 states have return successors, (83), 64 states have call predecessors, (83), 61 states have call successors, (83) [2022-11-03 01:46:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1006 transitions. [2022-11-03 01:46:44,998 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1006 transitions. Word has length 59 [2022-11-03 01:46:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:44,998 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1006 transitions. [2022-11-03 01:46:44,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:46:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1006 transitions. [2022-11-03 01:46:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:45,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:45,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:45,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:45,200 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash 169253140, now seen corresponding path program 1 times [2022-11-03 01:46:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:45,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210960032] [2022-11-03 01:46:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:45,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:45,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:45,203 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:45,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-03 01:46:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:45,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:46:45,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:45,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:45,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:45,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210960032] [2022-11-03 01:46:45,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210960032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:45,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:45,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:45,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908161243] [2022-11-03 01:46:45,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:45,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:45,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:45,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:45,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:45,417 INFO L87 Difference]: Start difference. First operand 803 states and 1006 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:45,475 INFO L93 Difference]: Finished difference Result 821 states and 1025 transitions. [2022-11-03 01:46:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-11-03 01:46:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:45,477 INFO L225 Difference]: With dead ends: 821 [2022-11-03 01:46:45,477 INFO L226 Difference]: Without dead ends: 821 [2022-11-03 01:46:45,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:45,477 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 18 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:45,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1623 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-03 01:46:45,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 803. [2022-11-03 01:46:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 684 states have (on average 1.2514619883040936) internal successors, (856), 698 states have internal predecessors, (856), 66 states have call successors, (66), 40 states have call predecessors, (66), 52 states have return successors, (83), 64 states have call predecessors, (83), 61 states have call successors, (83) [2022-11-03 01:46:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1005 transitions. [2022-11-03 01:46:45,488 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1005 transitions. Word has length 56 [2022-11-03 01:46:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:45,489 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1005 transitions. [2022-11-03 01:46:45,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1005 transitions. [2022-11-03 01:46:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:45,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:45,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:45,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:45,703 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash 191885394, now seen corresponding path program 1 times [2022-11-03 01:46:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:45,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053325312] [2022-11-03 01:46:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:45,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:45,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:45,705 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:45,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 01:46:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:45,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:45,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:45,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:45,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:45,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053325312] [2022-11-03 01:46:45,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053325312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:45,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:45,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163020554] [2022-11-03 01:46:45,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:45,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:45,971 INFO L87 Difference]: Start difference. First operand 803 states and 1005 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:46,236 INFO L93 Difference]: Finished difference Result 820 states and 1023 transitions. [2022-11-03 01:46:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:46,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-03 01:46:46,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:46,238 INFO L225 Difference]: With dead ends: 820 [2022-11-03 01:46:46,238 INFO L226 Difference]: Without dead ends: 796 [2022-11-03 01:46:46,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:46:46,239 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 62 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4353 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:46,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4353 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:46,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-03 01:46:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-11-03 01:46:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 678 states have (on average 1.252212389380531) internal successors, (849), 692 states have internal predecessors, (849), 65 states have call successors, (65), 40 states have call predecessors, (65), 52 states have return successors, (81), 63 states have call predecessors, (81), 60 states have call successors, (81) [2022-11-03 01:46:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 995 transitions. [2022-11-03 01:46:46,250 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 995 transitions. Word has length 56 [2022-11-03 01:46:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:46,250 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 995 transitions. [2022-11-03 01:46:46,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:46,250 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 995 transitions. [2022-11-03 01:46:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:46,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:46,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:46,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2022-11-03 01:46:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:46,463 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2005785928, now seen corresponding path program 1 times [2022-11-03 01:46:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:46,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801897831] [2022-11-03 01:46:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:46,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:46,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:46,465 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:46,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-03 01:46:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:46,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:46,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:46,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:46,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:46,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801897831] [2022-11-03 01:46:46,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801897831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:46,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:46,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406090372] [2022-11-03 01:46:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:46,736 INFO L87 Difference]: Start difference. First operand 796 states and 995 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:46,993 INFO L93 Difference]: Finished difference Result 813 states and 1012 transitions. [2022-11-03 01:46:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:46,993 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-03 01:46:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:46,995 INFO L225 Difference]: With dead ends: 813 [2022-11-03 01:46:46,995 INFO L226 Difference]: Without dead ends: 790 [2022-11-03 01:46:46,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:46:46,996 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 62 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4247 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:46,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4247 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:46,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-11-03 01:46:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2022-11-03 01:46:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 673 states have (on average 1.25111441307578) internal successors, (842), 687 states have internal predecessors, (842), 64 states have call successors, (64), 40 states have call predecessors, (64), 52 states have return successors, (80), 62 states have call predecessors, (80), 59 states have call successors, (80) [2022-11-03 01:46:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 986 transitions. [2022-11-03 01:46:47,003 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 986 transitions. Word has length 56 [2022-11-03 01:46:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:47,004 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 986 transitions. [2022-11-03 01:46:47,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 986 transitions. [2022-11-03 01:46:47,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 01:46:47,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:47,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:47,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:47,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:47,206 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1622755266, now seen corresponding path program 1 times [2022-11-03 01:46:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:47,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670781146] [2022-11-03 01:46:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:47,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:47,208 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:47,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-03 01:46:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:47,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:46:47,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:47,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:47,356 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:47,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670781146] [2022-11-03 01:46:47,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670781146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:47,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:47,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:47,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032281872] [2022-11-03 01:46:47,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:47,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:47,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:47,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:47,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:47,358 INFO L87 Difference]: Start difference. First operand 790 states and 986 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-03 01:46:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:47,368 INFO L93 Difference]: Finished difference Result 730 states and 895 transitions. [2022-11-03 01:46:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:47,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2022-11-03 01:46:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:47,370 INFO L225 Difference]: With dead ends: 730 [2022-11-03 01:46:47,370 INFO L226 Difference]: Without dead ends: 730 [2022-11-03 01:46:47,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:47,371 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:47,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 755 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-11-03 01:46:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 730. [2022-11-03 01:46:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 625 states have (on average 1.2288) internal successors, (768), 638 states have internal predecessors, (768), 57 states have call successors, (57), 35 states have call predecessors, (57), 47 states have return successors, (70), 56 states have call predecessors, (70), 53 states have call successors, (70) [2022-11-03 01:46:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 895 transitions. [2022-11-03 01:46:47,386 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 895 transitions. Word has length 59 [2022-11-03 01:46:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:47,387 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 895 transitions. [2022-11-03 01:46:47,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-03 01:46:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 895 transitions. [2022-11-03 01:46:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 01:46:47,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:47,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:47,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:47,602 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1080746315, now seen corresponding path program 1 times [2022-11-03 01:46:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:47,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217120252] [2022-11-03 01:46:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:47,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:47,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:47,604 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:47,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 01:46:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:47,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:47,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:47,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:47,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:47,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217120252] [2022-11-03 01:46:47,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217120252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:47,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:47,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:47,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93454049] [2022-11-03 01:46:47,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:47,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:47,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:47,885 INFO L87 Difference]: Start difference. First operand 730 states and 895 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:46:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:48,148 INFO L93 Difference]: Finished difference Result 762 states and 927 transitions. [2022-11-03 01:46:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:48,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2022-11-03 01:46:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:48,150 INFO L225 Difference]: With dead ends: 762 [2022-11-03 01:46:48,150 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 01:46:48,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:46:48,150 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 70 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:48,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4237 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 01:46:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 727. [2022-11-03 01:46:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 623 states have (on average 1.2247191011235956) internal successors, (763), 636 states have internal predecessors, (763), 56 states have call successors, (56), 35 states have call predecessors, (56), 47 states have return successors, (69), 55 states have call predecessors, (69), 52 states have call successors, (69) [2022-11-03 01:46:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 888 transitions. [2022-11-03 01:46:48,160 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 888 transitions. Word has length 62 [2022-11-03 01:46:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:48,160 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 888 transitions. [2022-11-03 01:46:48,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:46:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 888 transitions. [2022-11-03 01:46:48,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:46:48,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:48,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:48,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-03 01:46:48,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:48,364 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash -233501783, now seen corresponding path program 1 times [2022-11-03 01:46:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:48,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632900222] [2022-11-03 01:46:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:48,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:48,365 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:48,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-03 01:46:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:48,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:46:48,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:48,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:48,637 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:48,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632900222] [2022-11-03 01:46:48,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632900222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:48,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:48,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:46:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694944986] [2022-11-03 01:46:48,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:48,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:46:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:46:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:46:48,638 INFO L87 Difference]: Start difference. First operand 727 states and 888 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:48,867 INFO L93 Difference]: Finished difference Result 743 states and 903 transitions. [2022-11-03 01:46:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:46:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-03 01:46:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:48,868 INFO L225 Difference]: With dead ends: 743 [2022-11-03 01:46:48,869 INFO L226 Difference]: Without dead ends: 715 [2022-11-03 01:46:48,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:46:48,869 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 62 mSDsluCounter, 3667 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:48,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4045 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-03 01:46:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2022-11-03 01:46:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 612 states have (on average 1.2173202614379084) internal successors, (745), 625 states have internal predecessors, (745), 55 states have call successors, (55), 35 states have call predecessors, (55), 47 states have return successors, (68), 54 states have call predecessors, (68), 51 states have call successors, (68) [2022-11-03 01:46:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 868 transitions. [2022-11-03 01:46:48,875 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 868 transitions. Word has length 57 [2022-11-03 01:46:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:48,876 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 868 transitions. [2022-11-03 01:46:48,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 868 transitions. [2022-11-03 01:46:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:46:48,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:48,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:48,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Ended with exit code 0 [2022-11-03 01:46:49,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:49,077 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1477617433, now seen corresponding path program 1 times [2022-11-03 01:46:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:49,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013703118] [2022-11-03 01:46:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:49,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:49,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:49,079 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:49,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-03 01:46:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:49,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:49,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:49,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:49,256 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:49,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013703118] [2022-11-03 01:46:49,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013703118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:49,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:49,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789252725] [2022-11-03 01:46:49,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:49,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:49,257 INFO L87 Difference]: Start difference. First operand 715 states and 868 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:49,327 INFO L93 Difference]: Finished difference Result 752 states and 908 transitions. [2022-11-03 01:46:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:49,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-11-03 01:46:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:49,329 INFO L225 Difference]: With dead ends: 752 [2022-11-03 01:46:49,329 INFO L226 Difference]: Without dead ends: 752 [2022-11-03 01:46:49,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:49,330 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 68 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:49,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1788 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-03 01:46:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 715. [2022-11-03 01:46:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 612 states have (on average 1.2156862745098038) internal successors, (744), 625 states have internal predecessors, (744), 55 states have call successors, (55), 35 states have call predecessors, (55), 47 states have return successors, (68), 54 states have call predecessors, (68), 51 states have call successors, (68) [2022-11-03 01:46:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 867 transitions. [2022-11-03 01:46:49,337 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 867 transitions. Word has length 57 [2022-11-03 01:46:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:49,337 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 867 transitions. [2022-11-03 01:46:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 867 transitions. [2022-11-03 01:46:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:46:49,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:49,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:49,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2022-11-03 01:46:49,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:49,547 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1611630939, now seen corresponding path program 1 times [2022-11-03 01:46:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:49,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346728945] [2022-11-03 01:46:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:49,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:49,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:49,549 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:49,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-03 01:46:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:49,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:49,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:49,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:49,778 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:49,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346728945] [2022-11-03 01:46:49,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346728945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:49,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:49,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:49,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923716631] [2022-11-03 01:46:49,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:49,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:49,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:49,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:49,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:49,779 INFO L87 Difference]: Start difference. First operand 715 states and 867 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:49,933 INFO L93 Difference]: Finished difference Result 735 states and 889 transitions. [2022-11-03 01:46:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-11-03 01:46:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:49,935 INFO L225 Difference]: With dead ends: 735 [2022-11-03 01:46:49,935 INFO L226 Difference]: Without dead ends: 695 [2022-11-03 01:46:49,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:49,935 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 73 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:49,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2793 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-11-03 01:46:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2022-11-03 01:46:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 596 states have (on average 1.2114093959731544) internal successors, (722), 608 states have internal predecessors, (722), 51 states have call successors, (51), 35 states have call predecessors, (51), 47 states have return successors, (63), 51 states have call predecessors, (63), 47 states have call successors, (63) [2022-11-03 01:46:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 836 transitions. [2022-11-03 01:46:49,941 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 836 transitions. Word has length 57 [2022-11-03 01:46:49,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:49,941 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 836 transitions. [2022-11-03 01:46:49,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 836 transitions. [2022-11-03 01:46:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:49,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:49,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:49,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-03 01:46:50,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:50,142 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1762473366, now seen corresponding path program 1 times [2022-11-03 01:46:50,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:50,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707158211] [2022-11-03 01:46:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:50,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:50,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:50,144 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:50,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 01:46:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:50,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:46:50,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:50,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:50,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:50,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707158211] [2022-11-03 01:46:50,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707158211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:50,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:50,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372577347] [2022-11-03 01:46:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:46:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:46:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:50,316 INFO L87 Difference]: Start difference. First operand 695 states and 836 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:50,373 INFO L93 Difference]: Finished difference Result 714 states and 855 transitions. [2022-11-03 01:46:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:50,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-11-03 01:46:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:50,375 INFO L225 Difference]: With dead ends: 714 [2022-11-03 01:46:50,375 INFO L226 Difference]: Without dead ends: 714 [2022-11-03 01:46:50,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:50,375 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 39 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:50,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1632 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:50,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-11-03 01:46:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 695. [2022-11-03 01:46:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 596 states have (on average 1.2080536912751678) internal successors, (720), 608 states have internal predecessors, (720), 51 states have call successors, (51), 35 states have call predecessors, (51), 47 states have return successors, (63), 51 states have call predecessors, (63), 47 states have call successors, (63) [2022-11-03 01:46:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 834 transitions. [2022-11-03 01:46:50,382 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 834 transitions. Word has length 56 [2022-11-03 01:46:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:50,383 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 834 transitions. [2022-11-03 01:46:50,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 834 transitions. [2022-11-03 01:46:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:50,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:50,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:50,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:50,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:50,585 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:50,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:50,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1628459860, now seen corresponding path program 1 times [2022-11-03 01:46:50,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:50,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321140708] [2022-11-03 01:46:50,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:50,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:50,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:50,587 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:50,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2022-11-03 01:46:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:50,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:46:50,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:50,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:50,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321140708] [2022-11-03 01:46:50,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321140708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:50,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:50,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361969101] [2022-11-03 01:46:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:46:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:46:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:46:50,837 INFO L87 Difference]: Start difference. First operand 695 states and 834 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:50,981 INFO L93 Difference]: Finished difference Result 713 states and 853 transitions. [2022-11-03 01:46:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:46:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-11-03 01:46:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:50,983 INFO L225 Difference]: With dead ends: 713 [2022-11-03 01:46:50,983 INFO L226 Difference]: Without dead ends: 687 [2022-11-03 01:46:50,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:50,983 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 60 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:50,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2557 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-03 01:46:50,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2022-11-03 01:46:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 589 states have (on average 1.2071307300509337) internal successors, (711), 601 states have internal predecessors, (711), 50 states have call successors, (50), 35 states have call predecessors, (50), 47 states have return successors, (61), 50 states have call predecessors, (61), 46 states have call successors, (61) [2022-11-03 01:46:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 822 transitions. [2022-11-03 01:46:50,992 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 822 transitions. Word has length 56 [2022-11-03 01:46:50,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:50,992 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 822 transitions. [2022-11-03 01:46:50,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:46:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 822 transitions. [2022-11-03 01:46:50,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:50,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:50,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:51,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (104)] Ended with exit code 0 [2022-11-03 01:46:51,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:51,194 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash 474047414, now seen corresponding path program 1 times [2022-11-03 01:46:51,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:51,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112006256] [2022-11-03 01:46:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:51,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:51,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:51,196 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:51,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2022-11-03 01:46:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:51,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:46:51,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:51,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:51,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:51,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112006256] [2022-11-03 01:46:51,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112006256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:51,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:51,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348672430] [2022-11-03 01:46:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:51,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:51,451 INFO L87 Difference]: Start difference. First operand 687 states and 822 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:51,660 INFO L93 Difference]: Finished difference Result 797 states and 945 transitions. [2022-11-03 01:46:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2022-11-03 01:46:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:51,661 INFO L225 Difference]: With dead ends: 797 [2022-11-03 01:46:51,662 INFO L226 Difference]: Without dead ends: 769 [2022-11-03 01:46:51,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:46:51,662 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 91 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:51,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2739 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-03 01:46:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 747. [2022-11-03 01:46:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 645 states have (on average 1.2) internal successors, (774), 658 states have internal predecessors, (774), 50 states have call successors, (50), 35 states have call predecessors, (50), 51 states have return successors, (65), 53 states have call predecessors, (65), 46 states have call successors, (65) [2022-11-03 01:46:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 889 transitions. [2022-11-03 01:46:51,670 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 889 transitions. Word has length 56 [2022-11-03 01:46:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:51,670 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 889 transitions. [2022-11-03 01:46:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 889 transitions. [2022-11-03 01:46:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:46:51,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:51,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:51,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:51,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:51,884 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1924152368, now seen corresponding path program 1 times [2022-11-03 01:46:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:51,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077232887] [2022-11-03 01:46:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:51,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:51,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:51,885 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:51,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2022-11-03 01:46:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:52,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:46:52,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:52,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:52,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:52,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077232887] [2022-11-03 01:46:52,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077232887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:52,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:52,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:52,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717960909] [2022-11-03 01:46:52,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:52,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:52,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:52,032 INFO L87 Difference]: Start difference. First operand 747 states and 889 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:52,054 INFO L93 Difference]: Finished difference Result 760 states and 897 transitions. [2022-11-03 01:46:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:52,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2022-11-03 01:46:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:52,056 INFO L225 Difference]: With dead ends: 760 [2022-11-03 01:46:52,057 INFO L226 Difference]: Without dead ends: 754 [2022-11-03 01:46:52,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:52,057 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 298 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:52,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 364 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-03 01:46:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 704. [2022-11-03 01:46:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 604 states have (on average 1.1920529801324504) internal successors, (720), 617 states have internal predecessors, (720), 50 states have call successors, (50), 35 states have call predecessors, (50), 49 states have return successors, (63), 51 states have call predecessors, (63), 46 states have call successors, (63) [2022-11-03 01:46:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 833 transitions. [2022-11-03 01:46:52,067 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 833 transitions. Word has length 56 [2022-11-03 01:46:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:52,067 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 833 transitions. [2022-11-03 01:46:52,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 833 transitions. [2022-11-03 01:46:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 01:46:52,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:52,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:52,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:52,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:52,279 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1546270633, now seen corresponding path program 1 times [2022-11-03 01:46:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:52,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356375944] [2022-11-03 01:46:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:52,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:52,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:52,281 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:52,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2022-11-03 01:46:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:52,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:46:52,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:52,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:52,569 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:52,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356375944] [2022-11-03 01:46:52,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356375944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:52,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:52,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903219571] [2022-11-03 01:46:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:52,570 INFO L87 Difference]: Start difference. First operand 704 states and 833 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:52,810 INFO L93 Difference]: Finished difference Result 732 states and 860 transitions. [2022-11-03 01:46:52,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:46:52,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-03 01:46:52,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:52,811 INFO L225 Difference]: With dead ends: 732 [2022-11-03 01:46:52,811 INFO L226 Difference]: Without dead ends: 691 [2022-11-03 01:46:52,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:46:52,812 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 91 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:52,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2779 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:46:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-03 01:46:52,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 628. [2022-11-03 01:46:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 534 states have (on average 1.198501872659176) internal successors, (640), 545 states have internal predecessors, (640), 50 states have call successors, (50), 35 states have call predecessors, (50), 43 states have return successors, (57), 47 states have call predecessors, (57), 46 states have call successors, (57) [2022-11-03 01:46:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 747 transitions. [2022-11-03 01:46:52,819 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 747 transitions. Word has length 57 [2022-11-03 01:46:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:52,819 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 747 transitions. [2022-11-03 01:46:52,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 747 transitions. [2022-11-03 01:46:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 01:46:52,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:52,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:52,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:53,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:53,021 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash 218918919, now seen corresponding path program 1 times [2022-11-03 01:46:53,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:53,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802225340] [2022-11-03 01:46:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:53,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:53,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:53,023 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:53,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2022-11-03 01:46:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:53,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:46:53,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:53,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:53,204 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:46:53,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802225340] [2022-11-03 01:46:53,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802225340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:53,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:53,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:53,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494778387] [2022-11-03 01:46:53,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:53,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:53,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:46:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:53,205 INFO L87 Difference]: Start difference. First operand 628 states and 747 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:53,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:53,230 INFO L93 Difference]: Finished difference Result 789 states and 939 transitions. [2022-11-03 01:46:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:53,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2022-11-03 01:46:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:53,231 INFO L225 Difference]: With dead ends: 789 [2022-11-03 01:46:53,232 INFO L226 Difference]: Without dead ends: 789 [2022-11-03 01:46:53,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:53,232 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 273 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:53,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 893 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:46:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-11-03 01:46:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 456. [2022-11-03 01:46:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 392 states have (on average 1.1785714285714286) internal successors, (462), 398 states have internal predecessors, (462), 34 states have call successors, (34), 24 states have call predecessors, (34), 29 states have return successors, (36), 33 states have call predecessors, (36), 30 states have call successors, (36) [2022-11-03 01:46:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 532 transitions. [2022-11-03 01:46:53,240 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 532 transitions. Word has length 58 [2022-11-03 01:46:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:53,240 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 532 transitions. [2022-11-03 01:46:53,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:46:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 532 transitions. [2022-11-03 01:46:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 01:46:53,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:53,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:53,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:53,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:53,454 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 01:46:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2090035410, now seen corresponding path program 1 times [2022-11-03 01:46:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:46:53,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152943927] [2022-11-03 01:46:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:53,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:46:53,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:46:53,455 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:46:53,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2022-11-03 01:46:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:46:53,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:46:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:46:53,705 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-03 01:46:53,705 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:46:53,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-11-03 01:46:53,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-11-03 01:46:53,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:53,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:46:53,923 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:53,925 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:46:54,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:46:54 BoogieIcfgContainer [2022-11-03 01:46:54,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:46:54,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:46:54,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:46:54,014 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:46:54,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:40" (3/4) ... [2022-11-03 01:46:54,018 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:46:54,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:46:54,018 INFO L158 Benchmark]: Toolchain (without parser) took 75779.20ms. Allocated memory was 81.8MB in the beginning and 138.4MB in the end (delta: 56.6MB). Free memory was 60.0MB in the beginning and 66.8MB in the end (delta: -6.7MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2022-11-03 01:46:54,018 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:46:54,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.90ms. Allocated memory is still 81.8MB. Free memory was 59.9MB in the beginning and 47.2MB in the end (delta: 12.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 01:46:54,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.67ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 40.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 01:46:54,019 INFO L158 Benchmark]: Boogie Preprocessor took 71.14ms. Allocated memory is still 81.8MB. Free memory was 40.9MB in the beginning and 35.9MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 01:46:54,019 INFO L158 Benchmark]: RCFGBuilder took 1772.62ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 35.9MB in the beginning and 70.7MB in the end (delta: -34.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-11-03 01:46:54,019 INFO L158 Benchmark]: TraceAbstraction took 73144.71ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 70.0MB in the beginning and 67.8MB in the end (delta: 2.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-03 01:46:54,019 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 138.4MB. Free memory was 67.8MB in the beginning and 66.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:46:54,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.90ms. Allocated memory is still 81.8MB. Free memory was 59.9MB in the beginning and 47.2MB in the end (delta: 12.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.67ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 40.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.14ms. Allocated memory is still 81.8MB. Free memory was 40.9MB in the beginning and 35.9MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1772.62ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 35.9MB in the beginning and 70.7MB in the end (delta: -34.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * TraceAbstraction took 73144.71ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 70.0MB in the beginning and 67.8MB in the end (delta: 2.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 138.4MB. Free memory was 67.8MB in the beginning and 66.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 59. Possible FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp [L1755] CALL _BLAST_init() [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=9, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1772] CALL stub_driver_init() [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=10, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=9, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(DeviceObject)=8, \old(Irp)=9, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=10, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(DeviceObject)=8, \old(Irp)=9, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - UnprovableResult [Line: 1717]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 471 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 73.0s, OverallIterations: 108, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 21.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14622 SdHoareTripleChecker+Valid, 15.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14417 mSDsluCounter, 324226 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 265226 mSDsCounter, 553 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12415 IncrementalHoareTripleChecker+Invalid, 12968 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 553 mSolverCounterUnsat, 59000 mSDtfsCounter, 12415 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5116 GetRequests, 4299 SyntacticMatches, 0 SemanticMatches, 817 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1062occurred in iteration=39, InterpolantAutomatonStates: 773, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 107 MinimizatonAttempts, 2729 StatesRemovedByMinimization, 74 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.2s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 5023 NumberOfCodeBlocks, 5023 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 4858 ConstructedInterpolants, 0 QuantifiedInterpolants, 12758 SizeOfPredicates, 346 NumberOfNonLiveVariables, 18003 ConjunctsInSsa, 759 ConjunctsInUnsatCore, 107 InterpolantComputations, 107 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 01:46:54,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53941cd8-8f21-4ce4-83e3-0e3feb3860fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample