./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.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_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/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_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/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_96b1062e-ea74-4d27-93cf-485cdbec6e9e/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 48b194ce99c1fa112b5c4d4ed6cc0216b9fbb33f6f6efd57d62e9c27b1f7eb5c --- 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 03:32:55,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:32:55,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:32:55,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:32:55,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:32:55,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:32:55,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:32:55,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:32:55,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:32:55,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:32:55,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:32:55,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:32:55,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:32:55,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:32:55,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:32:55,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:32:55,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:32:55,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:32:55,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:32:55,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:32:55,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:32:55,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:32:55,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:32:55,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:32:55,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:32:55,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:32:55,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:32:55,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:32:55,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:32:55,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:32:55,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:32:55,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:32:55,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:32:55,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:32:55,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:32:55,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:32:55,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:32:55,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:32:55,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:32:55,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:32:55,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:32:55,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 03:32:55,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:32:55,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:32:55,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:32:55,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:32:55,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:32:55,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:32:55,210 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:32:55,210 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:32:55,210 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:32:55,211 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:32:55,212 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:32:55,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:32:55,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:32:55,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:32:55,213 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:32:55,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:32:55,213 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:32:55,213 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:32:55,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 03:32:55,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 03:32:55,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:32:55,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:32:55,217 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:32:55,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:32:55,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:32:55,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:32:55,218 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 03:32:55,218 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 03:32:55,218 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 03:32:55,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:32:55,219 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:32:55,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:32:55,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:32:55,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:32:55,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:32:55,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:32:55,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:32:55,220 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:32:55,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:32:55,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:32:55,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:32:55,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:32:55,222 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_96b1062e-ea74-4d27-93cf-485cdbec6e9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48b194ce99c1fa112b5c4d4ed6cc0216b9fbb33f6f6efd57d62e9c27b1f7eb5c [2022-11-03 03:32:55,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:32:55,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:32:55,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:32:55,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:32:55,570 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:32:55,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-11-03 03:32:55,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/data/d6caa3368/c154486f61344b21adefd24794c3dc31/FLAG02286232f [2022-11-03 03:32:56,221 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:32:56,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-11-03 03:32:56,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/data/d6caa3368/c154486f61344b21adefd24794c3dc31/FLAG02286232f [2022-11-03 03:32:56,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/data/d6caa3368/c154486f61344b21adefd24794c3dc31 [2022-11-03 03:32:56,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:32:56,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:32:56,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:32:56,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:32:56,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:32:56,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:32:56" (1/1) ... [2022-11-03 03:32:56,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c618593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:56, skipping insertion in model container [2022-11-03 03:32:56,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:32:56" (1/1) ... [2022-11-03 03:32:56,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:32:56,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:32:56,803 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_96b1062e-ea74-4d27-93cf-485cdbec6e9e/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-11-03 03:32:56,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:32:56,907 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:32:56,927 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_96b1062e-ea74-4d27-93cf-485cdbec6e9e/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-11-03 03:32:57,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:32:57,033 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:32:57,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57 WrapperNode [2022-11-03 03:32:57,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:32:57,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:32:57,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:32:57,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:32:57,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,126 INFO L138 Inliner]: procedures = 38, calls = 66, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 755 [2022-11-03 03:32:57,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:32:57,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:32:57,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:32:57,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:32:57,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,169 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:32:57,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:32:57,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:32:57,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:32:57,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (1/1) ... [2022-11-03 03:32:57,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:32:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:57,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:32:57,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:32:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:32:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-03 03:32:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-03 03:32:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-11-03 03:32:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-11-03 03:32:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-03 03:32:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-03 03:32:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-11-03 03:32:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-11-03 03:32:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-11-03 03:32:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-11-03 03:32:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-03 03:32:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-03 03:32:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:32:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-03 03:32:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-03 03:32:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-11-03 03:32:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-11-03 03:32:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-11-03 03:32:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-11-03 03:32:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:32:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:32:57,503 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:32:57,506 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:32:57,513 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:32:57,594 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-03 03:32:57,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-03 03:32:57,597 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:32:57,625 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-11-03 03:32:57,626 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-11-03 03:32:57,702 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:32:57,709 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:32:57,721 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:32:58,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-11-03 03:32:58,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-11-03 03:32:58,321 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-11-03 03:32:58,321 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-11-03 03:32:58,321 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume !false; [2022-11-03 03:32:58,321 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume false; [2022-11-03 03:32:58,322 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:32:58,374 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-11-03 03:32:58,375 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-11-03 03:32:58,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:32:58,540 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:32:58,541 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:32:58,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:58 BoogieIcfgContainer [2022-11-03 03:32:58,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:32:58,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:32:58,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:32:58,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:32:58,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:32:56" (1/3) ... [2022-11-03 03:32:58,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c65dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:32:58, skipping insertion in model container [2022-11-03 03:32:58,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:57" (2/3) ... [2022-11-03 03:32:58,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c65dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:32:58, skipping insertion in model container [2022-11-03 03:32:58,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:58" (3/3) ... [2022-11-03 03:32:58,554 INFO L112 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2022-11-03 03:32:58,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:32:58,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:32:58,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:32:58,631 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;@77c0afcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:32:58,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 03:32:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 134 states have (on average 1.537313432835821) internal successors, (206), 152 states have internal predecessors, (206), 44 states have call successors, (44), 9 states have call predecessors, (44), 9 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-03 03:32:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:32:58,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:58,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:32:58,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:32:58,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 25459806, now seen corresponding path program 1 times [2022-11-03 03:32:58,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:58,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743544744] [2022-11-03 03:32:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:58,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:58,837 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 03:32:58,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:58,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743544744] [2022-11-03 03:32:58,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743544744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:58,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:58,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:32:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20601937] [2022-11-03 03:32:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:58,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:58,878 INFO L87 Difference]: Start difference. First operand has 190 states, 134 states have (on average 1.537313432835821) internal successors, (206), 152 states have internal predecessors, (206), 44 states have call successors, (44), 9 states have call predecessors, (44), 9 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) 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 03:32:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:59,114 INFO L93 Difference]: Finished difference Result 211 states and 311 transitions. [2022-11-03 03:32:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:32:59,117 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 03:32:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:59,131 INFO L225 Difference]: With dead ends: 211 [2022-11-03 03:32:59,131 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 03:32:59,133 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 03:32:59,139 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 134 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:59,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 391 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:32:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 03:32:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 195. [2022-11-03 03:32:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 141 states have (on average 1.5177304964539007) internal successors, (214), 157 states have internal predecessors, (214), 44 states have call successors, (44), 9 states have call predecessors, (44), 8 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-03 03:32:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 288 transitions. [2022-11-03 03:32:59,205 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 288 transitions. Word has length 4 [2022-11-03 03:32:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:59,206 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 288 transitions. [2022-11-03 03:32:59,206 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 03:32:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 288 transitions. [2022-11-03 03:32:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:32:59,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:59,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 03:32:59,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:32:59,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:32:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1616214689, now seen corresponding path program 1 times [2022-11-03 03:32:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:59,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527298183] [2022-11-03 03:32:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:59,274 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 03:32:59,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:59,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527298183] [2022-11-03 03:32:59,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527298183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:59,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:59,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:32:59,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363205588] [2022-11-03 03:32:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:59,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:59,279 INFO L87 Difference]: Start difference. First operand 195 states and 288 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 03:32:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:59,439 INFO L93 Difference]: Finished difference Result 329 states and 481 transitions. [2022-11-03 03:32:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:32:59,440 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 03:32:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:59,446 INFO L225 Difference]: With dead ends: 329 [2022-11-03 03:32:59,447 INFO L226 Difference]: Without dead ends: 329 [2022-11-03 03:32:59,451 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 03:32:59,453 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 260 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:59,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 444 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:32:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-03 03:32:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 313. [2022-11-03 03:32:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 232 states have (on average 1.4655172413793103) internal successors, (340), 244 states have internal predecessors, (340), 63 states have call successors, (63), 16 states have call predecessors, (63), 16 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2022-11-03 03:32:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 464 transitions. [2022-11-03 03:32:59,516 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 464 transitions. Word has length 6 [2022-11-03 03:32:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:59,517 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 464 transitions. [2022-11-03 03:32:59,518 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 03:32:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 464 transitions. [2022-11-03 03:32:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:32:59,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:59,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:59,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:32:59,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:32:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1553979174, now seen corresponding path program 1 times [2022-11-03 03:32:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:59,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105512055] [2022-11-03 03:32:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:59,703 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 03:32:59,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:59,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105512055] [2022-11-03 03:32:59,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105512055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:59,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:59,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:32:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095091101] [2022-11-03 03:32:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:59,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:32:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:32:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:32:59,706 INFO L87 Difference]: Start difference. First operand 313 states and 464 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 03:33:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:00,072 INFO L93 Difference]: Finished difference Result 448 states and 662 transitions. [2022-11-03 03:33:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 9 [2022-11-03 03:33:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:00,081 INFO L225 Difference]: With dead ends: 448 [2022-11-03 03:33:00,082 INFO L226 Difference]: Without dead ends: 448 [2022-11-03 03:33:00,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 03:33:00,091 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 420 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:00,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 378 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-03 03:33:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442. [2022-11-03 03:33:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 328 states have (on average 1.420731707317073) internal successors, (466), 335 states have internal predecessors, (466), 86 states have call successors, (86), 28 states have call predecessors, (86), 26 states have return successors, (106), 82 states have call predecessors, (106), 75 states have call successors, (106) [2022-11-03 03:33:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 658 transitions. [2022-11-03 03:33:00,148 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 658 transitions. Word has length 9 [2022-11-03 03:33:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:00,149 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 658 transitions. [2022-11-03 03:33:00,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 03:33:00,149 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 658 transitions. [2022-11-03 03:33:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:33:00,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:00,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:00,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:33:00,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:00,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1444845384, now seen corresponding path program 1 times [2022-11-03 03:33:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:00,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411535830] [2022-11-03 03:33:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:00,232 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 03:33:00,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411535830] [2022-11-03 03:33:00,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411535830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:00,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:00,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:33:00,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101318956] [2022-11-03 03:33:00,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:00,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:00,245 INFO L87 Difference]: Start difference. First operand 442 states and 658 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 03:33:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:00,356 INFO L93 Difference]: Finished difference Result 441 states and 657 transitions. [2022-11-03 03:33:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:00,357 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 03:33:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:00,360 INFO L225 Difference]: With dead ends: 441 [2022-11-03 03:33:00,360 INFO L226 Difference]: Without dead ends: 439 [2022-11-03 03:33:00,361 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 03:33:00,362 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 135 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 303 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 03:33:00,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 303 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-03 03:33:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 434. [2022-11-03 03:33:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 321 states have (on average 1.395638629283489) internal successors, (448), 327 states have internal predecessors, (448), 86 states have call successors, (86), 28 states have call predecessors, (86), 26 states have return successors, (106), 82 states have call predecessors, (106), 75 states have call successors, (106) [2022-11-03 03:33:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 640 transitions. [2022-11-03 03:33:00,388 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 640 transitions. Word has length 7 [2022-11-03 03:33:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:00,388 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 640 transitions. [2022-11-03 03:33:00,389 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 03:33:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 640 transitions. [2022-11-03 03:33:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:33:00,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:00,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:00,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:33:00,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:00,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash 190657969, now seen corresponding path program 1 times [2022-11-03 03:33:00,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:00,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653981567] [2022-11-03 03:33:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:00,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:00,424 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 03:33:00,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:00,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653981567] [2022-11-03 03:33:00,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653981567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:00,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:00,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121949166] [2022-11-03 03:33:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:00,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:00,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:00,428 INFO L87 Difference]: Start difference. First operand 434 states and 640 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 03:33:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:00,543 INFO L93 Difference]: Finished difference Result 437 states and 642 transitions. [2022-11-03 03:33:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:00,544 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 03:33:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:00,547 INFO L225 Difference]: With dead ends: 437 [2022-11-03 03:33:00,547 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 03:33:00,548 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 03:33:00,549 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:00,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 03:33:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-11-03 03:33:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 321 states have (on average 1.3925233644859814) internal successors, (447), 327 states have internal predecessors, (447), 86 states have call successors, (86), 28 states have call predecessors, (86), 26 states have return successors, (106), 82 states have call predecessors, (106), 75 states have call successors, (106) [2022-11-03 03:33:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 639 transitions. [2022-11-03 03:33:00,572 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 639 transitions. Word has length 11 [2022-11-03 03:33:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:00,572 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 639 transitions. [2022-11-03 03:33:00,573 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 03:33:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 639 transitions. [2022-11-03 03:33:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:33:00,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:00,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:00,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:33:00,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:00,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash 209179452, now seen corresponding path program 1 times [2022-11-03 03:33:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:00,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464864198] [2022-11-03 03:33:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:00,685 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 03:33:00,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:00,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464864198] [2022-11-03 03:33:00,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464864198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:00,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:00,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357052418] [2022-11-03 03:33:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:00,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:00,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:00,688 INFO L87 Difference]: Start difference. First operand 434 states and 639 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 03:33:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:00,775 INFO L93 Difference]: Finished difference Result 672 states and 995 transitions. [2022-11-03 03:33:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:00,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2022-11-03 03:33:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:00,780 INFO L225 Difference]: With dead ends: 672 [2022-11-03 03:33:00,780 INFO L226 Difference]: Without dead ends: 672 [2022-11-03 03:33:00,780 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 03:33:00,781 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 203 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:00,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 421 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:00,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-03 03:33:00,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 632. [2022-11-03 03:33:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 467 states have (on average 1.3940042826552463) internal successors, (651), 472 states have internal predecessors, (651), 124 states have call successors, (124), 42 states have call predecessors, (124), 40 states have return successors, (171), 119 states have call predecessors, (171), 114 states have call successors, (171) [2022-11-03 03:33:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 946 transitions. [2022-11-03 03:33:00,822 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 946 transitions. Word has length 13 [2022-11-03 03:33:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:00,822 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 946 transitions. [2022-11-03 03:33:00,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 03:33:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 946 transitions. [2022-11-03 03:33:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:33:00,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:00,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:00,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:33:00,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1824710985, now seen corresponding path program 1 times [2022-11-03 03:33:00,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:00,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684859237] [2022-11-03 03:33:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:00,894 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 03:33:00,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684859237] [2022-11-03 03:33:00,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684859237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:00,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:00,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:00,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848549421] [2022-11-03 03:33:00,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:00,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:00,896 INFO L87 Difference]: Start difference. First operand 632 states and 946 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 03:33:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:01,018 INFO L93 Difference]: Finished difference Result 637 states and 952 transitions. [2022-11-03 03:33:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:01,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16 [2022-11-03 03:33:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:01,022 INFO L225 Difference]: With dead ends: 637 [2022-11-03 03:33:01,022 INFO L226 Difference]: Without dead ends: 637 [2022-11-03 03:33:01,023 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 03:33:01,024 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 7 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:01,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 375 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-03 03:33:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2022-11-03 03:33:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 473 states have (on average 1.3911205073995772) internal successors, (658), 476 states have internal predecessors, (658), 123 states have call successors, (123), 43 states have call predecessors, (123), 40 states have return successors, (171), 119 states have call predecessors, (171), 114 states have call successors, (171) [2022-11-03 03:33:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 952 transitions. [2022-11-03 03:33:01,056 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 952 transitions. Word has length 16 [2022-11-03 03:33:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:01,056 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 952 transitions. [2022-11-03 03:33:01,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 03:33:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 952 transitions. [2022-11-03 03:33:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:33:01,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:01,063 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] [2022-11-03 03:33:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:33:01,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash 735565653, now seen corresponding path program 1 times [2022-11-03 03:33:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:01,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213118651] [2022-11-03 03:33:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:01,115 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 03:33:01,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:01,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213118651] [2022-11-03 03:33:01,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213118651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:01,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:01,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989444582] [2022-11-03 03:33:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:01,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:01,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:01,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:01,119 INFO L87 Difference]: Start difference. First operand 637 states and 952 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:33:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:01,227 INFO L93 Difference]: Finished difference Result 651 states and 966 transitions. [2022-11-03 03:33:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:01,228 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-03 03:33:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:01,232 INFO L225 Difference]: With dead ends: 651 [2022-11-03 03:33:01,232 INFO L226 Difference]: Without dead ends: 651 [2022-11-03 03:33:01,234 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 03:33:01,234 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 26 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:01,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 361 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-03 03:33:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2022-11-03 03:33:01,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 485 states have (on average 1.3835051546391752) internal successors, (671), 488 states have internal predecessors, (671), 123 states have call successors, (123), 43 states have call predecessors, (123), 40 states have return successors, (171), 119 states have call predecessors, (171), 114 states have call successors, (171) [2022-11-03 03:33:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 965 transitions. [2022-11-03 03:33:01,265 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 965 transitions. Word has length 20 [2022-11-03 03:33:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:01,265 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 965 transitions. [2022-11-03 03:33:01,265 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:33:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 965 transitions. [2022-11-03 03:33:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:33:01,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:01,269 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] [2022-11-03 03:33:01,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:33:01,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1780778480, now seen corresponding path program 1 times [2022-11-03 03:33:01,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:01,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693822038] [2022-11-03 03:33:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:01,388 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 03:33:01,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:01,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693822038] [2022-11-03 03:33:01,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693822038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:01,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:01,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:01,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757364355] [2022-11-03 03:33:01,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:01,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:01,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:01,391 INFO L87 Difference]: Start difference. First operand 649 states and 965 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 03:33:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:01,675 INFO L93 Difference]: Finished difference Result 651 states and 964 transitions. [2022-11-03 03:33:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:01,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 21 [2022-11-03 03:33:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:01,679 INFO L225 Difference]: With dead ends: 651 [2022-11-03 03:33:01,679 INFO L226 Difference]: Without dead ends: 651 [2022-11-03 03:33:01,680 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 03:33:01,680 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 290 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:01,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 404 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-03 03:33:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2022-11-03 03:33:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 485 states have (on average 1.379381443298969) internal successors, (669), 488 states have internal predecessors, (669), 123 states have call successors, (123), 43 states have call predecessors, (123), 40 states have return successors, (171), 119 states have call predecessors, (171), 114 states have call successors, (171) [2022-11-03 03:33:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 963 transitions. [2022-11-03 03:33:01,703 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 963 transitions. Word has length 21 [2022-11-03 03:33:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:01,703 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 963 transitions. [2022-11-03 03:33:01,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 03:33:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 963 transitions. [2022-11-03 03:33:01,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 03:33:01,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:01,705 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 03:33:01,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:33:01,705 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1519215839, now seen corresponding path program 1 times [2022-11-03 03:33:01,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:01,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130732892] [2022-11-03 03:33:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:01,779 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 03:33:01,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:01,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130732892] [2022-11-03 03:33:01,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130732892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:01,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:01,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:01,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664470364] [2022-11-03 03:33:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:01,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:01,782 INFO L87 Difference]: Start difference. First operand 649 states and 963 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 03:33:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:02,099 INFO L93 Difference]: Finished difference Result 651 states and 962 transitions. [2022-11-03 03:33:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 22 [2022-11-03 03:33:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:02,103 INFO L225 Difference]: With dead ends: 651 [2022-11-03 03:33:02,104 INFO L226 Difference]: Without dead ends: 651 [2022-11-03 03:33:02,105 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 03:33:02,108 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 285 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:02,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 406 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-03 03:33:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2022-11-03 03:33:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 485 states have (on average 1.3752577319587629) internal successors, (667), 488 states have internal predecessors, (667), 123 states have call successors, (123), 43 states have call predecessors, (123), 40 states have return successors, (171), 119 states have call predecessors, (171), 114 states have call successors, (171) [2022-11-03 03:33:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 961 transitions. [2022-11-03 03:33:02,132 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 961 transitions. Word has length 22 [2022-11-03 03:33:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:02,133 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 961 transitions. [2022-11-03 03:33:02,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 03:33:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 961 transitions. [2022-11-03 03:33:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 03:33:02,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:02,135 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 03:33:02,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:33:02,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:02,137 INFO L85 PathProgramCache]: Analyzing trace with hash 204342713, now seen corresponding path program 1 times [2022-11-03 03:33:02,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:02,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323684073] [2022-11-03 03:33:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:02,194 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 03:33:02,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:02,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323684073] [2022-11-03 03:33:02,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323684073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:02,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:02,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096069743] [2022-11-03 03:33:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:02,197 INFO L87 Difference]: Start difference. First operand 649 states and 961 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:33:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:02,269 INFO L93 Difference]: Finished difference Result 660 states and 971 transitions. [2022-11-03 03:33:02,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:02,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2022-11-03 03:33:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:02,274 INFO L225 Difference]: With dead ends: 660 [2022-11-03 03:33:02,274 INFO L226 Difference]: Without dead ends: 647 [2022-11-03 03:33:02,274 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 03:33:02,275 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:02,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-03 03:33:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2022-11-03 03:33:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 484 states have (on average 1.3739669421487604) internal successors, (665), 487 states have internal predecessors, (665), 122 states have call successors, (122), 43 states have call predecessors, (122), 40 states have return successors, (170), 118 states have call predecessors, (170), 113 states have call successors, (170) [2022-11-03 03:33:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 957 transitions. [2022-11-03 03:33:02,302 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 957 transitions. Word has length 23 [2022-11-03 03:33:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:02,304 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 957 transitions. [2022-11-03 03:33:02,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:33:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 957 transitions. [2022-11-03 03:33:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 03:33:02,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:02,305 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 03:33:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:33:02,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1261158427, now seen corresponding path program 1 times [2022-11-03 03:33:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:02,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967499665] [2022-11-03 03:33:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:02,451 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 03:33:02,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:02,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967499665] [2022-11-03 03:33:02,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967499665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:02,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:02,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:02,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787335287] [2022-11-03 03:33:02,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:02,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:02,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:02,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:02,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:02,454 INFO L87 Difference]: Start difference. First operand 647 states and 957 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 03:33:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:02,698 INFO L93 Difference]: Finished difference Result 647 states and 955 transitions. [2022-11-03 03:33:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:02,698 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 03:33:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:02,702 INFO L225 Difference]: With dead ends: 647 [2022-11-03 03:33:02,702 INFO L226 Difference]: Without dead ends: 647 [2022-11-03 03:33:02,702 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 03:33:02,703 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 234 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:02,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 299 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-03 03:33:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2022-11-03 03:33:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 484 states have (on average 1.3698347107438016) internal successors, (663), 487 states have internal predecessors, (663), 122 states have call successors, (122), 43 states have call predecessors, (122), 40 states have return successors, (170), 118 states have call predecessors, (170), 113 states have call successors, (170) [2022-11-03 03:33:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 955 transitions. [2022-11-03 03:33:02,725 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 955 transitions. Word has length 23 [2022-11-03 03:33:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:02,725 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 955 transitions. [2022-11-03 03:33:02,725 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 03:33:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 955 transitions. [2022-11-03 03:33:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 03:33:02,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:02,726 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 03:33:02,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:33:02,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1469075890, now seen corresponding path program 1 times [2022-11-03 03:33:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:02,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170182545] [2022-11-03 03:33:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:02,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:02,811 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 03:33:02,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:02,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170182545] [2022-11-03 03:33:02,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170182545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:02,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:02,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:02,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73805367] [2022-11-03 03:33:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:02,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:02,813 INFO L87 Difference]: Start difference. First operand 647 states and 955 transitions. Second operand has 4 states, 4 states have (on average 5.75) 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 03:33:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:03,042 INFO L93 Difference]: Finished difference Result 647 states and 953 transitions. [2022-11-03 03:33:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:03,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) 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 03:33:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:03,046 INFO L225 Difference]: With dead ends: 647 [2022-11-03 03:33:03,046 INFO L226 Difference]: Without dead ends: 647 [2022-11-03 03:33:03,046 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 03:33:03,047 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 233 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:03,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 307 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-03 03:33:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2022-11-03 03:33:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 484 states have (on average 1.365702479338843) internal successors, (661), 487 states have internal predecessors, (661), 122 states have call successors, (122), 43 states have call predecessors, (122), 40 states have return successors, (170), 118 states have call predecessors, (170), 113 states have call successors, (170) [2022-11-03 03:33:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 953 transitions. [2022-11-03 03:33:03,069 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 953 transitions. Word has length 24 [2022-11-03 03:33:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:03,070 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 953 transitions. [2022-11-03 03:33:03,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) 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 03:33:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 953 transitions. [2022-11-03 03:33:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 03:33:03,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:03,071 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 03:33:03,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:33:03,071 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1265499097, now seen corresponding path program 1 times [2022-11-03 03:33:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:03,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732133865] [2022-11-03 03:33:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:03,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:03,108 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 03:33:03,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:03,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732133865] [2022-11-03 03:33:03,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732133865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:03,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:03,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153747883] [2022-11-03 03:33:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:03,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:03,110 INFO L87 Difference]: Start difference. First operand 647 states and 953 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 03:33:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:03,269 INFO L93 Difference]: Finished difference Result 965 states and 1519 transitions. [2022-11-03 03:33:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:03,270 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), 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 25 [2022-11-03 03:33:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:03,274 INFO L225 Difference]: With dead ends: 965 [2022-11-03 03:33:03,275 INFO L226 Difference]: Without dead ends: 965 [2022-11-03 03:33:03,275 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 03:33:03,275 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 145 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:03,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 431 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2022-11-03 03:33:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 691. [2022-11-03 03:33:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 517 states have (on average 1.369439071566731) internal successors, (708), 522 states have internal predecessors, (708), 129 states have call successors, (129), 45 states have call predecessors, (129), 44 states have return successors, (196), 125 states have call predecessors, (196), 120 states have call successors, (196) [2022-11-03 03:33:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1033 transitions. [2022-11-03 03:33:03,305 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1033 transitions. Word has length 25 [2022-11-03 03:33:03,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:03,305 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1033 transitions. [2022-11-03 03:33:03,305 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), 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 03:33:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1033 transitions. [2022-11-03 03:33:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 03:33:03,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:03,307 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 03:33:03,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:33:03,307 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash 259071617, now seen corresponding path program 1 times [2022-11-03 03:33:03,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:03,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081588647] [2022-11-03 03:33:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:03,355 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 03:33:03,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:03,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081588647] [2022-11-03 03:33:03,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081588647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:03,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:03,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:33:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120620925] [2022-11-03 03:33:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:03,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:03,357 INFO L87 Difference]: Start difference. First operand 691 states and 1033 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 03:33:03,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:03,541 INFO L93 Difference]: Finished difference Result 459 states and 632 transitions. [2022-11-03 03:33:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:03,542 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), 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 29 [2022-11-03 03:33:03,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:03,544 INFO L225 Difference]: With dead ends: 459 [2022-11-03 03:33:03,544 INFO L226 Difference]: Without dead ends: 459 [2022-11-03 03:33:03,544 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 03:33:03,545 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 249 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:03,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 384 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-11-03 03:33:03,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 445. [2022-11-03 03:33:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 336 states have (on average 1.318452380952381) internal successors, (443), 342 states have internal predecessors, (443), 79 states have call successors, (79), 31 states have call predecessors, (79), 29 states have return successors, (97), 73 states have call predecessors, (97), 70 states have call successors, (97) [2022-11-03 03:33:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 619 transitions. [2022-11-03 03:33:03,558 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 619 transitions. Word has length 29 [2022-11-03 03:33:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:03,558 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 619 transitions. [2022-11-03 03:33:03,558 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), 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 03:33:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 619 transitions. [2022-11-03 03:33:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 03:33:03,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:03,559 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 03:33:03,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:33:03,560 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1602242582, now seen corresponding path program 1 times [2022-11-03 03:33:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:03,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871100504] [2022-11-03 03:33:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:03,597 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 03:33:03,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871100504] [2022-11-03 03:33:03,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871100504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:03,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:03,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:03,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268528626] [2022-11-03 03:33:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:03,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:03,599 INFO L87 Difference]: Start difference. First operand 445 states and 619 transitions. Second operand has 3 states, 3 states have (on average 8.0) 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 03:33:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:03,746 INFO L93 Difference]: Finished difference Result 635 states and 946 transitions. [2022-11-03 03:33:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:03,746 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), 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 03:33:03,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:03,749 INFO L225 Difference]: With dead ends: 635 [2022-11-03 03:33:03,749 INFO L226 Difference]: Without dead ends: 635 [2022-11-03 03:33:03,750 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 03:33:03,750 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 146 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:03,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 500 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-03 03:33:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 442. [2022-11-03 03:33:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 334 states have (on average 1.311377245508982) internal successors, (438), 339 states have internal predecessors, (438), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (97), 73 states have call predecessors, (97), 70 states have call successors, (97) [2022-11-03 03:33:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 613 transitions. [2022-11-03 03:33:03,768 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 613 transitions. Word has length 25 [2022-11-03 03:33:03,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:03,768 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 613 transitions. [2022-11-03 03:33:03,769 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), 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 03:33:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 613 transitions. [2022-11-03 03:33:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:33:03,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:03,770 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] [2022-11-03 03:33:03,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:33:03,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:03,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1029122890, now seen corresponding path program 1 times [2022-11-03 03:33:03,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:03,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522779033] [2022-11-03 03:33:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:03,832 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 03:33:03,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:03,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522779033] [2022-11-03 03:33:03,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522779033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:03,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:03,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:03,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296017062] [2022-11-03 03:33:03,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:03,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:03,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:03,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:03,835 INFO L87 Difference]: Start difference. First operand 442 states and 613 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 03:33:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:04,311 INFO L93 Difference]: Finished difference Result 635 states and 945 transitions. [2022-11-03 03:33:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:04,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 26 [2022-11-03 03:33:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:04,315 INFO L225 Difference]: With dead ends: 635 [2022-11-03 03:33:04,315 INFO L226 Difference]: Without dead ends: 635 [2022-11-03 03:33:04,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 03:33:04,316 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 499 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:04,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 466 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:33:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-03 03:33:04,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 442. [2022-11-03 03:33:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 334 states have (on average 1.3083832335329342) internal successors, (437), 339 states have internal predecessors, (437), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (97), 73 states have call predecessors, (97), 70 states have call successors, (97) [2022-11-03 03:33:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 612 transitions. [2022-11-03 03:33:04,340 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 612 transitions. Word has length 26 [2022-11-03 03:33:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:04,341 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 612 transitions. [2022-11-03 03:33:04,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 03:33:04,341 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 612 transitions. [2022-11-03 03:33:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:33:04,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:04,342 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] [2022-11-03 03:33:04,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:33:04,342 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1416730963, now seen corresponding path program 1 times [2022-11-03 03:33:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:04,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241649214] [2022-11-03 03:33:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:04,473 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 03:33:04,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:04,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241649214] [2022-11-03 03:33:04,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241649214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:04,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:04,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:33:04,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052706131] [2022-11-03 03:33:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:04,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:04,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:04,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:04,476 INFO L87 Difference]: Start difference. First operand 442 states and 612 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 03:33:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:04,571 INFO L93 Difference]: Finished difference Result 453 states and 623 transitions. [2022-11-03 03:33:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:04,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 26 [2022-11-03 03:33:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:04,575 INFO L225 Difference]: With dead ends: 453 [2022-11-03 03:33:04,575 INFO L226 Difference]: Without dead ends: 452 [2022-11-03 03:33:04,575 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 03:33:04,576 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 13 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:04,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 593 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-03 03:33:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2022-11-03 03:33:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 340 states have (on average 1.3029411764705883) internal successors, (443), 345 states have internal predecessors, (443), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (97), 73 states have call predecessors, (97), 70 states have call successors, (97) [2022-11-03 03:33:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 618 transitions. [2022-11-03 03:33:04,594 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 618 transitions. Word has length 26 [2022-11-03 03:33:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:04,595 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 618 transitions. [2022-11-03 03:33:04,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 03:33:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 618 transitions. [2022-11-03 03:33:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:33:04,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:04,596 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] [2022-11-03 03:33:04,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:33:04,597 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1417007793, now seen corresponding path program 1 times [2022-11-03 03:33:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:04,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120002553] [2022-11-03 03:33:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:04,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:04,734 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 03:33:04,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:04,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120002553] [2022-11-03 03:33:04,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120002553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:04,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:04,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785841674] [2022-11-03 03:33:04,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:04,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:04,737 INFO L87 Difference]: Start difference. First operand 448 states and 618 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 03:33:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:05,085 INFO L93 Difference]: Finished difference Result 639 states and 947 transitions. [2022-11-03 03:33:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 26 [2022-11-03 03:33:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:05,088 INFO L225 Difference]: With dead ends: 639 [2022-11-03 03:33:05,089 INFO L226 Difference]: Without dead ends: 623 [2022-11-03 03:33:05,089 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 03:33:05,090 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 329 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:05,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 424 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-11-03 03:33:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 436. [2022-11-03 03:33:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 328 states have (on average 1.3109756097560976) internal successors, (430), 333 states have internal predecessors, (430), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (97), 73 states have call predecessors, (97), 70 states have call successors, (97) [2022-11-03 03:33:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 605 transitions. [2022-11-03 03:33:05,106 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 605 transitions. Word has length 26 [2022-11-03 03:33:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:05,106 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 605 transitions. [2022-11-03 03:33:05,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 03:33:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 605 transitions. [2022-11-03 03:33:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 03:33:05,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:05,107 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 03:33:05,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 03:33:05,108 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:05,108 INFO L85 PathProgramCache]: Analyzing trace with hash 940959747, now seen corresponding path program 1 times [2022-11-03 03:33:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:05,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714296471] [2022-11-03 03:33:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:05,250 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 03:33:05,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:05,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714296471] [2022-11-03 03:33:05,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714296471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:05,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:05,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:33:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975594034] [2022-11-03 03:33:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:05,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:33:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:33:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:33:05,253 INFO L87 Difference]: Start difference. First operand 436 states and 605 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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 03:33:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:05,464 INFO L93 Difference]: Finished difference Result 448 states and 617 transitions. [2022-11-03 03:33:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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 03:33:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:05,466 INFO L225 Difference]: With dead ends: 448 [2022-11-03 03:33:05,467 INFO L226 Difference]: Without dead ends: 447 [2022-11-03 03:33:05,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:33:05,467 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 15 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:05,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1124 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-03 03:33:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2022-11-03 03:33:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 335 states have (on average 1.3044776119402985) internal successors, (437), 340 states have internal predecessors, (437), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (97), 73 states have call predecessors, (97), 70 states have call successors, (97) [2022-11-03 03:33:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 612 transitions. [2022-11-03 03:33:05,480 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 612 transitions. Word has length 27 [2022-11-03 03:33:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:05,481 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 612 transitions. [2022-11-03 03:33:05,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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 03:33:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 612 transitions. [2022-11-03 03:33:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 03:33:05,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:05,482 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 03:33:05,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 03:33:05,483 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash 940682917, now seen corresponding path program 1 times [2022-11-03 03:33:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332279319] [2022-11-03 03:33:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:05,618 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 03:33:05,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:05,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332279319] [2022-11-03 03:33:05,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332279319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:05,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:05,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077798423] [2022-11-03 03:33:05,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:05,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:05,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:05,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:05,621 INFO L87 Difference]: Start difference. First operand 443 states and 612 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 03:33:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:06,017 INFO L93 Difference]: Finished difference Result 632 states and 938 transitions. [2022-11-03 03:33:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 03:33:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:06,021 INFO L225 Difference]: With dead ends: 632 [2022-11-03 03:33:06,021 INFO L226 Difference]: Without dead ends: 620 [2022-11-03 03:33:06,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:06,022 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 390 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:06,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 449 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:33:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-11-03 03:33:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 431. [2022-11-03 03:33:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 324 states have (on average 1.308641975308642) internal successors, (424), 329 states have internal predecessors, (424), 77 states have call successors, (77), 31 states have call predecessors, (77), 29 states have return successors, (96), 72 states have call predecessors, (96), 69 states have call successors, (96) [2022-11-03 03:33:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 597 transitions. [2022-11-03 03:33:06,040 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 597 transitions. Word has length 27 [2022-11-03 03:33:06,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:06,041 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 597 transitions. [2022-11-03 03:33:06,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 03:33:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 597 transitions. [2022-11-03 03:33:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:33:06,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:06,043 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 03:33:06,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:33:06,043 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1380428570, now seen corresponding path program 1 times [2022-11-03 03:33:06,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:06,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190369710] [2022-11-03 03:33:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:06,207 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 03:33:06,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:06,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190369710] [2022-11-03 03:33:06,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190369710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:06,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:06,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:33:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237187065] [2022-11-03 03:33:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:06,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:33:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:06,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:33:06,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:06,210 INFO L87 Difference]: Start difference. First operand 431 states and 597 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 03:33:06,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:06,356 INFO L93 Difference]: Finished difference Result 434 states and 599 transitions. [2022-11-03 03:33:06,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:33:06,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 28 [2022-11-03 03:33:06,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:06,359 INFO L225 Difference]: With dead ends: 434 [2022-11-03 03:33:06,359 INFO L226 Difference]: Without dead ends: 414 [2022-11-03 03:33:06,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 03:33:06,360 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:06,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 938 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-03 03:33:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-11-03 03:33:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 309 states have (on average 1.3203883495145632) internal successors, (408), 314 states have internal predecessors, (408), 76 states have call successors, (76), 30 states have call predecessors, (76), 28 states have return successors, (95), 71 states have call predecessors, (95), 68 states have call successors, (95) [2022-11-03 03:33:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 579 transitions. [2022-11-03 03:33:06,373 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 579 transitions. Word has length 28 [2022-11-03 03:33:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:06,374 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 579 transitions. [2022-11-03 03:33:06,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 03:33:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 579 transitions. [2022-11-03 03:33:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:33:06,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:06,375 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 03:33:06,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 03:33:06,376 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1996159108, now seen corresponding path program 1 times [2022-11-03 03:33:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:06,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806045849] [2022-11-03 03:33:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:06,429 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 03:33:06,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:06,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806045849] [2022-11-03 03:33:06,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806045849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:06,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:06,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:06,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900027159] [2022-11-03 03:33:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:06,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:06,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:06,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:06,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:06,432 INFO L87 Difference]: Start difference. First operand 414 states and 579 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 03:33:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:06,570 INFO L93 Difference]: Finished difference Result 441 states and 605 transitions. [2022-11-03 03:33:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 28 [2022-11-03 03:33:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:06,572 INFO L225 Difference]: With dead ends: 441 [2022-11-03 03:33:06,572 INFO L226 Difference]: Without dead ends: 412 [2022-11-03 03:33:06,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:06,573 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 34 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:06,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 736 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-03 03:33:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2022-11-03 03:33:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 308 states have (on average 1.3149350649350648) internal successors, (405), 313 states have internal predecessors, (405), 75 states have call successors, (75), 30 states have call predecessors, (75), 28 states have return successors, (94), 70 states have call predecessors, (94), 67 states have call successors, (94) [2022-11-03 03:33:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 574 transitions. [2022-11-03 03:33:06,585 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 574 transitions. Word has length 28 [2022-11-03 03:33:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:06,586 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 574 transitions. [2022-11-03 03:33:06,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 03:33:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 574 transitions. [2022-11-03 03:33:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 03:33:06,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:06,587 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 03:33:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 03:33:06,587 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2090888140, now seen corresponding path program 1 times [2022-11-03 03:33:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:06,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629255528] [2022-11-03 03:33:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:06,647 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 03:33:06,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:06,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629255528] [2022-11-03 03:33:06,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629255528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:06,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:06,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:06,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996663842] [2022-11-03 03:33:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:06,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:06,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:06,649 INFO L87 Difference]: Start difference. First operand 412 states and 574 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:33:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:06,716 INFO L93 Difference]: Finished difference Result 418 states and 582 transitions. [2022-11-03 03:33:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:06,717 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-11-03 03:33:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:06,719 INFO L225 Difference]: With dead ends: 418 [2022-11-03 03:33:06,719 INFO L226 Difference]: Without dead ends: 418 [2022-11-03 03:33:06,719 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 03:33:06,720 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:06,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-03 03:33:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-11-03 03:33:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 314 states have (on average 1.3152866242038217) internal successors, (413), 317 states have internal predecessors, (413), 75 states have call successors, (75), 30 states have call predecessors, (75), 28 states have return successors, (94), 70 states have call predecessors, (94), 67 states have call successors, (94) [2022-11-03 03:33:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 582 transitions. [2022-11-03 03:33:06,732 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 582 transitions. Word has length 32 [2022-11-03 03:33:06,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:06,732 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 582 transitions. [2022-11-03 03:33:06,732 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:33:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 582 transitions. [2022-11-03 03:33:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 03:33:06,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:06,733 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 03:33:06,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 03:33:06,734 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1677831238, now seen corresponding path program 1 times [2022-11-03 03:33:06,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:06,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747540055] [2022-11-03 03:33:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:06,896 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 03:33:06,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:06,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747540055] [2022-11-03 03:33:06,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747540055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:06,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:06,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:33:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692416819] [2022-11-03 03:33:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:33:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:33:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:33:06,898 INFO L87 Difference]: Start difference. First operand 418 states and 582 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 03:33:07,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:07,078 INFO L93 Difference]: Finished difference Result 417 states and 580 transitions. [2022-11-03 03:33:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:07,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 32 [2022-11-03 03:33:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:07,081 INFO L225 Difference]: With dead ends: 417 [2022-11-03 03:33:07,081 INFO L226 Difference]: Without dead ends: 395 [2022-11-03 03:33:07,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:33:07,082 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 10 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:07,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1047 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-03 03:33:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-11-03 03:33:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 294 states have (on average 1.3333333333333333) internal successors, (392), 296 states have internal predecessors, (392), 73 states have call successors, (73), 29 states have call predecessors, (73), 27 states have return successors, (93), 69 states have call predecessors, (93), 66 states have call successors, (93) [2022-11-03 03:33:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 558 transitions. [2022-11-03 03:33:07,093 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 558 transitions. Word has length 32 [2022-11-03 03:33:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:07,094 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 558 transitions. [2022-11-03 03:33:07,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 03:33:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 558 transitions. [2022-11-03 03:33:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 03:33:07,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:07,095 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 03:33:07,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 03:33:07,095 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2101976040, now seen corresponding path program 1 times [2022-11-03 03:33:07,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:07,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367810556] [2022-11-03 03:33:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:07,136 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 03:33:07,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:07,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367810556] [2022-11-03 03:33:07,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367810556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:07,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:07,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:07,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024293264] [2022-11-03 03:33:07,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:07,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:07,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:07,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:07,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:07,139 INFO L87 Difference]: Start difference. First operand 395 states and 558 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:33:07,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:07,248 INFO L93 Difference]: Finished difference Result 538 states and 771 transitions. [2022-11-03 03:33:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:07,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-11-03 03:33:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:07,251 INFO L225 Difference]: With dead ends: 538 [2022-11-03 03:33:07,251 INFO L226 Difference]: Without dead ends: 538 [2022-11-03 03:33:07,251 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 03:33:07,252 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 110 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:07,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 423 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-03 03:33:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 399. [2022-11-03 03:33:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 298 states have (on average 1.3355704697986577) internal successors, (398), 300 states have internal predecessors, (398), 73 states have call successors, (73), 29 states have call predecessors, (73), 27 states have return successors, (93), 69 states have call predecessors, (93), 66 states have call successors, (93) [2022-11-03 03:33:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 564 transitions. [2022-11-03 03:33:07,267 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 564 transitions. Word has length 36 [2022-11-03 03:33:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:07,267 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 564 transitions. [2022-11-03 03:33:07,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:33:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 564 transitions. [2022-11-03 03:33:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 03:33:07,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:07,268 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 03:33:07,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 03:33:07,269 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1343302093, now seen corresponding path program 1 times [2022-11-03 03:33:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:07,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701936870] [2022-11-03 03:33:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:07,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:07,329 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 03:33:07,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:07,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701936870] [2022-11-03 03:33:07,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701936870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:07,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:07,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869704674] [2022-11-03 03:33:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:07,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:07,332 INFO L87 Difference]: Start difference. First operand 399 states and 564 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 03:33:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:07,432 INFO L93 Difference]: Finished difference Result 410 states and 574 transitions. [2022-11-03 03:33:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 32 [2022-11-03 03:33:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:07,434 INFO L225 Difference]: With dead ends: 410 [2022-11-03 03:33:07,434 INFO L226 Difference]: Without dead ends: 385 [2022-11-03 03:33:07,435 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 03:33:07,435 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 23 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:07,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 680 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-03 03:33:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-11-03 03:33:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 286 states have (on average 1.3426573426573427) internal successors, (384), 288 states have internal predecessors, (384), 72 states have call successors, (72), 28 states have call predecessors, (72), 26 states have return successors, (92), 68 states have call predecessors, (92), 65 states have call successors, (92) [2022-11-03 03:33:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 548 transitions. [2022-11-03 03:33:07,447 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 548 transitions. Word has length 32 [2022-11-03 03:33:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:07,447 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 548 transitions. [2022-11-03 03:33:07,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 03:33:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 548 transitions. [2022-11-03 03:33:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 03:33:07,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:07,448 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 03:33:07,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 03:33:07,449 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash 498700032, now seen corresponding path program 1 times [2022-11-03 03:33:07,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:07,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38376262] [2022-11-03 03:33:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:07,522 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 03:33:07,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:07,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38376262] [2022-11-03 03:33:07,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38376262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:07,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:07,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:07,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140454171] [2022-11-03 03:33:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:07,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:07,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:07,524 INFO L87 Difference]: Start difference. First operand 385 states and 548 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:33:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:07,584 INFO L93 Difference]: Finished difference Result 718 states and 1052 transitions. [2022-11-03 03:33:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:07,584 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-11-03 03:33:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:07,588 INFO L225 Difference]: With dead ends: 718 [2022-11-03 03:33:07,588 INFO L226 Difference]: Without dead ends: 718 [2022-11-03 03:33:07,588 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 03:33:07,589 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 152 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:07,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 367 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:33:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-03 03:33:07,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 648. [2022-11-03 03:33:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 483 states have (on average 1.3685300207039337) internal successors, (661), 484 states have internal predecessors, (661), 119 states have call successors, (119), 48 states have call predecessors, (119), 45 states have return successors, (188), 115 states have call predecessors, (188), 112 states have call successors, (188) [2022-11-03 03:33:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 968 transitions. [2022-11-03 03:33:07,610 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 968 transitions. Word has length 37 [2022-11-03 03:33:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:07,611 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 968 transitions. [2022-11-03 03:33:07,611 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:33:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 968 transitions. [2022-11-03 03:33:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 03:33:07,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:07,612 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 03:33:07,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 03:33:07,612 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash -489083578, now seen corresponding path program 1 times [2022-11-03 03:33:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:07,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377043122] [2022-11-03 03:33:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:07,787 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 03:33:07,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:07,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377043122] [2022-11-03 03:33:07,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377043122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:07,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:07,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:33:07,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346787636] [2022-11-03 03:33:07,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:07,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:33:07,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:33:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:07,790 INFO L87 Difference]: Start difference. First operand 648 states and 968 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:33:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:07,897 INFO L93 Difference]: Finished difference Result 670 states and 1008 transitions. [2022-11-03 03:33:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:33:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-03 03:33:07,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:07,900 INFO L225 Difference]: With dead ends: 670 [2022-11-03 03:33:07,901 INFO L226 Difference]: Without dead ends: 670 [2022-11-03 03:33:07,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 03:33:07,901 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 13 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:07,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 821 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-03 03:33:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-11-03 03:33:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 499 states have (on average 1.3607214428857715) internal successors, (679), 504 states have internal predecessors, (679), 123 states have call successors, (123), 48 states have call predecessors, (123), 47 states have return successors, (206), 117 states have call predecessors, (206), 116 states have call successors, (206) [2022-11-03 03:33:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1008 transitions. [2022-11-03 03:33:07,923 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1008 transitions. Word has length 37 [2022-11-03 03:33:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:07,923 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1008 transitions. [2022-11-03 03:33:07,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:33:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1008 transitions. [2022-11-03 03:33:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:33:07,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:07,924 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 03:33:07,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 03:33:07,925 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash 525748074, now seen corresponding path program 1 times [2022-11-03 03:33:07,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:07,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196654501] [2022-11-03 03:33:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:07,971 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 03:33:07,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:07,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196654501] [2022-11-03 03:33:07,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196654501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:07,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:07,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:33:07,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138244305] [2022-11-03 03:33:07,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:07,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:07,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:07,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:07,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:07,973 INFO L87 Difference]: Start difference. First operand 670 states and 1008 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:33:08,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:08,083 INFO L93 Difference]: Finished difference Result 210 states and 291 transitions. [2022-11-03 03:33:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:08,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 4 states have call successors, (5), 2 states have call predecessors, (5), 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 03:33:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:08,085 INFO L225 Difference]: With dead ends: 210 [2022-11-03 03:33:08,086 INFO L226 Difference]: Without dead ends: 210 [2022-11-03 03:33:08,086 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 03:33:08,087 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 150 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:08,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 224 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-03 03:33:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 174. [2022-11-03 03:33:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 1.2598425196850394) internal successors, (160), 128 states have internal predecessors, (160), 35 states have call successors, (35), 13 states have call predecessors, (35), 11 states have return successors, (39), 32 states have call predecessors, (39), 32 states have call successors, (39) [2022-11-03 03:33:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 234 transitions. [2022-11-03 03:33:08,093 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 234 transitions. Word has length 39 [2022-11-03 03:33:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:08,093 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 234 transitions. [2022-11-03 03:33:08,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:33:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 234 transitions. [2022-11-03 03:33:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:33:08,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:08,094 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 03:33:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 03:33:08,094 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1025002463, now seen corresponding path program 1 times [2022-11-03 03:33:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:08,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112131611] [2022-11-03 03:33:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:08,178 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 03:33:08,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:08,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112131611] [2022-11-03 03:33:08,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112131611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:08,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:08,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300090607] [2022-11-03 03:33:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:08,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:08,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:08,180 INFO L87 Difference]: Start difference. First operand 174 states and 234 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:33:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:08,350 INFO L93 Difference]: Finished difference Result 174 states and 233 transitions. [2022-11-03 03:33:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:08,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-03 03:33:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:08,352 INFO L225 Difference]: With dead ends: 174 [2022-11-03 03:33:08,352 INFO L226 Difference]: Without dead ends: 174 [2022-11-03 03:33:08,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 03:33:08,353 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 143 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:08,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 283 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-03 03:33:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-03 03:33:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 128 states have internal predecessors, (159), 35 states have call successors, (35), 13 states have call predecessors, (35), 11 states have return successors, (39), 32 states have call predecessors, (39), 32 states have call successors, (39) [2022-11-03 03:33:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 233 transitions. [2022-11-03 03:33:08,358 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 233 transitions. Word has length 41 [2022-11-03 03:33:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:08,358 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 233 transitions. [2022-11-03 03:33:08,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:33:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 233 transitions. [2022-11-03 03:33:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 03:33:08,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:08,359 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 03:33:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 03:33:08,360 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash 436962109, now seen corresponding path program 1 times [2022-11-03 03:33:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:08,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426900586] [2022-11-03 03:33:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:08,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:08,750 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 03:33:08,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:08,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426900586] [2022-11-03 03:33:08,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426900586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:08,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:08,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:33:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893423343] [2022-11-03 03:33:08,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:08,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:33:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:33:08,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:33:08,752 INFO L87 Difference]: Start difference. First operand 174 states and 233 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:33:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:09,295 INFO L93 Difference]: Finished difference Result 200 states and 265 transitions. [2022-11-03 03:33:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:33:09,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-11-03 03:33:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:09,297 INFO L225 Difference]: With dead ends: 200 [2022-11-03 03:33:09,297 INFO L226 Difference]: Without dead ends: 200 [2022-11-03 03:33:09,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:33:09,298 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 223 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:09,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 481 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:33:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-03 03:33:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 180. [2022-11-03 03:33:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 132 states have internal predecessors, (162), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (42), 33 states have call predecessors, (42), 33 states have call successors, (42) [2022-11-03 03:33:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 240 transitions. [2022-11-03 03:33:09,305 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 240 transitions. Word has length 42 [2022-11-03 03:33:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:09,305 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 240 transitions. [2022-11-03 03:33:09,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:33:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 240 transitions. [2022-11-03 03:33:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 03:33:09,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:09,307 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 03:33:09,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 03:33:09,307 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1759084436, now seen corresponding path program 1 times [2022-11-03 03:33:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:09,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085365049] [2022-11-03 03:33:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:09,551 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 03:33:09,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:09,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085365049] [2022-11-03 03:33:09,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085365049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:09,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:09,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:33:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881933747] [2022-11-03 03:33:09,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:09,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:33:09,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:33:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:33:09,553 INFO L87 Difference]: Start difference. First operand 180 states and 240 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:33:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:09,898 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2022-11-03 03:33:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:33:09,899 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), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-11-03 03:33:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:09,900 INFO L225 Difference]: With dead ends: 174 [2022-11-03 03:33:09,900 INFO L226 Difference]: Without dead ends: 174 [2022-11-03 03:33:09,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:33:09,901 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 34 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:09,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 633 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-03 03:33:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-03 03:33:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 129 states have internal predecessors, (158), 33 states have call successors, (33), 15 states have call predecessors, (33), 13 states have return successors, (40), 29 states have call predecessors, (40), 30 states have call successors, (40) [2022-11-03 03:33:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2022-11-03 03:33:09,906 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 50 [2022-11-03 03:33:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:09,906 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2022-11-03 03:33:09,906 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), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:33:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2022-11-03 03:33:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 03:33:09,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:09,907 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, 1, 1, 1, 1, 1] [2022-11-03 03:33:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 03:33:09,908 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash 946985235, now seen corresponding path program 1 times [2022-11-03 03:33:09,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:09,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667045522] [2022-11-03 03:33:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:10,157 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 03:33:10,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:10,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667045522] [2022-11-03 03:33:10,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667045522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:10,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:10,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:33:10,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516823957] [2022-11-03 03:33:10,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:10,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:33:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:33:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:33:10,159 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:33:10,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:10,422 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2022-11-03 03:33:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:33:10,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2022-11-03 03:33:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:10,424 INFO L225 Difference]: With dead ends: 190 [2022-11-03 03:33:10,424 INFO L226 Difference]: Without dead ends: 174 [2022-11-03 03:33:10,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:33:10,424 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 40 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:10,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1154 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-03 03:33:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-03 03:33:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 129 states have internal predecessors, (158), 33 states have call successors, (33), 15 states have call predecessors, (33), 13 states have return successors, (39), 29 states have call predecessors, (39), 30 states have call successors, (39) [2022-11-03 03:33:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2022-11-03 03:33:10,433 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 58 [2022-11-03 03:33:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:10,433 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2022-11-03 03:33:10,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:33:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2022-11-03 03:33:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:33:10,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:10,434 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, 1] [2022-11-03 03:33:10,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 03:33:10,435 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash 745663820, now seen corresponding path program 1 times [2022-11-03 03:33:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:10,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046766472] [2022-11-03 03:33:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:10,718 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 03:33:10,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046766472] [2022-11-03 03:33:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046766472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:10,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:10,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:33:10,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857760112] [2022-11-03 03:33:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:10,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:33:10,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:33:10,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:33:10,721 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:10,981 INFO L93 Difference]: Finished difference Result 259 states and 366 transitions. [2022-11-03 03:33:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:33:10,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-03 03:33:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:10,986 INFO L225 Difference]: With dead ends: 259 [2022-11-03 03:33:10,986 INFO L226 Difference]: Without dead ends: 238 [2022-11-03 03:33:10,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:33:10,987 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 83 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:10,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1365 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-03 03:33:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-11-03 03:33:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 173 states have (on average 1.2658959537572254) internal successors, (219), 175 states have internal predecessors, (219), 51 states have call successors, (51), 15 states have call predecessors, (51), 13 states have return successors, (62), 47 states have call predecessors, (62), 47 states have call successors, (62) [2022-11-03 03:33:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 332 transitions. [2022-11-03 03:33:10,997 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 332 transitions. Word has length 63 [2022-11-03 03:33:10,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:10,998 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 332 transitions. [2022-11-03 03:33:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 332 transitions. [2022-11-03 03:33:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:33:11,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:11,005 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, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:11,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-03 03:33:11,005 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:11,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1879025492, now seen corresponding path program 1 times [2022-11-03 03:33:11,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:11,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826897416] [2022-11-03 03:33:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:11,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:11,228 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 03:33:11,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:11,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826897416] [2022-11-03 03:33:11,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826897416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:11,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:11,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:33:11,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078375278] [2022-11-03 03:33:11,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:11,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:33:11,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:11,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:33:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:33:11,231 INFO L87 Difference]: Start difference. First operand 238 states and 332 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 03:33:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:11,528 INFO L93 Difference]: Finished difference Result 257 states and 348 transitions. [2022-11-03 03:33:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:33:11,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 65 [2022-11-03 03:33:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:11,530 INFO L225 Difference]: With dead ends: 257 [2022-11-03 03:33:11,530 INFO L226 Difference]: Without dead ends: 235 [2022-11-03 03:33:11,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:33:11,531 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 170 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:11,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 982 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-03 03:33:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2022-11-03 03:33:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.2647058823529411) internal successors, (215), 172 states have internal predecessors, (215), 49 states have call successors, (49), 15 states have call predecessors, (49), 13 states have return successors, (60), 45 states have call predecessors, (60), 45 states have call successors, (60) [2022-11-03 03:33:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 324 transitions. [2022-11-03 03:33:11,539 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 324 transitions. Word has length 65 [2022-11-03 03:33:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:11,539 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 324 transitions. [2022-11-03 03:33:11,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 03:33:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 324 transitions. [2022-11-03 03:33:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:33:11,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:11,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:33:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-03 03:33:11,541 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1757245150, now seen corresponding path program 1 times [2022-11-03 03:33:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:11,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477634670] [2022-11-03 03:33:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:33:11,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:11,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477634670] [2022-11-03 03:33:11,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477634670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:11,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:11,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:33:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483392384] [2022-11-03 03:33:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:33:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:33:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:11,896 INFO L87 Difference]: Start difference. First operand 233 states and 324 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:12,341 INFO L93 Difference]: Finished difference Result 281 states and 385 transitions. [2022-11-03 03:33:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:33:12,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-11-03 03:33:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:12,343 INFO L225 Difference]: With dead ends: 281 [2022-11-03 03:33:12,343 INFO L226 Difference]: Without dead ends: 279 [2022-11-03 03:33:12,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:33:12,344 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 342 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:12,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 386 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-03 03:33:12,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 241. [2022-11-03 03:33:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 175 states have (on average 1.2742857142857142) internal successors, (223), 179 states have internal predecessors, (223), 51 states have call successors, (51), 16 states have call predecessors, (51), 14 states have return successors, (62), 45 states have call predecessors, (62), 47 states have call successors, (62) [2022-11-03 03:33:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 336 transitions. [2022-11-03 03:33:12,355 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 336 transitions. Word has length 70 [2022-11-03 03:33:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:12,355 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 336 transitions. [2022-11-03 03:33:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 336 transitions. [2022-11-03 03:33:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:33:12,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:12,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:33:12,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-03 03:33:12,357 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash 841215171, now seen corresponding path program 1 times [2022-11-03 03:33:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:12,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210398344] [2022-11-03 03:33:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:33:12,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:12,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210398344] [2022-11-03 03:33:12,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210398344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:12,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:12,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:33:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247903526] [2022-11-03 03:33:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:33:12,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:12,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:33:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:12,805 INFO L87 Difference]: Start difference. First operand 241 states and 336 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:13,268 INFO L93 Difference]: Finished difference Result 260 states and 357 transitions. [2022-11-03 03:33:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:33:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-11-03 03:33:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:13,270 INFO L225 Difference]: With dead ends: 260 [2022-11-03 03:33:13,270 INFO L226 Difference]: Without dead ends: 257 [2022-11-03 03:33:13,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:33:13,270 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 318 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:13,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 397 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-03 03:33:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 241. [2022-11-03 03:33:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 175 states have (on average 1.2685714285714285) internal successors, (222), 179 states have internal predecessors, (222), 51 states have call successors, (51), 16 states have call predecessors, (51), 14 states have return successors, (62), 45 states have call predecessors, (62), 47 states have call successors, (62) [2022-11-03 03:33:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 335 transitions. [2022-11-03 03:33:13,280 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 335 transitions. Word has length 70 [2022-11-03 03:33:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:13,280 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 335 transitions. [2022-11-03 03:33:13,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:33:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 335 transitions. [2022-11-03 03:33:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:33:13,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:13,282 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:13,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-03 03:33:13,282 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:13,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1075414213, now seen corresponding path program 1 times [2022-11-03 03:33:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:13,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541469640] [2022-11-03 03:33:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:13,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:13,544 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 03:33:13,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:13,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541469640] [2022-11-03 03:33:13,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541469640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:13,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:13,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:33:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005596038] [2022-11-03 03:33:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:33:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:33:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:33:13,547 INFO L87 Difference]: Start difference. First operand 241 states and 335 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 03:33:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:13,908 INFO L93 Difference]: Finished difference Result 247 states and 339 transitions. [2022-11-03 03:33:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:33:13,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-11-03 03:33:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:13,910 INFO L225 Difference]: With dead ends: 247 [2022-11-03 03:33:13,910 INFO L226 Difference]: Without dead ends: 220 [2022-11-03 03:33:13,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:33:13,911 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 237 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:13,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1157 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:13,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-03 03:33:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 148. [2022-11-03 03:33:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.1826923076923077) internal successors, (123), 107 states have internal predecessors, (123), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (34), 25 states have call predecessors, (34), 27 states have call successors, (34) [2022-11-03 03:33:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 187 transitions. [2022-11-03 03:33:13,916 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 187 transitions. Word has length 70 [2022-11-03 03:33:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:13,917 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 187 transitions. [2022-11-03 03:33:13,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 03:33:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 187 transitions. [2022-11-03 03:33:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 03:33:13,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:13,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-03 03:33:13,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-03 03:33:13,919 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:13,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1814231975, now seen corresponding path program 1 times [2022-11-03 03:33:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:13,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640460490] [2022-11-03 03:33:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:13,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:33:14,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:14,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640460490] [2022-11-03 03:33:14,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640460490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:14,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:14,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:14,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925421696] [2022-11-03 03:33:14,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:14,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:14,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:14,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:14,021 INFO L87 Difference]: Start difference. First operand 148 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:33:14,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:14,212 INFO L93 Difference]: Finished difference Result 170 states and 201 transitions. [2022-11-03 03:33:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:14,213 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-03 03:33:14,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:14,214 INFO L225 Difference]: With dead ends: 170 [2022-11-03 03:33:14,214 INFO L226 Difference]: Without dead ends: 169 [2022-11-03 03:33:14,214 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 03:33:14,215 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 103 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:14,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 260 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-03 03:33:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-03 03:33:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 124 states have internal predecessors, (134), 32 states have call successors, (32), 19 states have call predecessors, (32), 17 states have return successors, (33), 25 states have call predecessors, (33), 29 states have call successors, (33) [2022-11-03 03:33:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 199 transitions. [2022-11-03 03:33:14,220 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 199 transitions. Word has length 78 [2022-11-03 03:33:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:14,221 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 199 transitions. [2022-11-03 03:33:14,221 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:33:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 199 transitions. [2022-11-03 03:33:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:33:14,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:14,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:33:14,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-03 03:33:14,223 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash 549176524, now seen corresponding path program 1 times [2022-11-03 03:33:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:14,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636957182] [2022-11-03 03:33:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-03 03:33:14,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:14,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636957182] [2022-11-03 03:33:14,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636957182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:14,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:14,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:33:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092307058] [2022-11-03 03:33:14,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:33:14,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:33:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:14,719 INFO L87 Difference]: Start difference. First operand 169 states and 199 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:33:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:15,101 INFO L93 Difference]: Finished difference Result 197 states and 233 transitions. [2022-11-03 03:33:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:33:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-11-03 03:33:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:15,103 INFO L225 Difference]: With dead ends: 197 [2022-11-03 03:33:15,103 INFO L226 Difference]: Without dead ends: 193 [2022-11-03 03:33:15,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:33:15,104 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 290 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:15,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 279 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-03 03:33:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 170. [2022-11-03 03:33:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.125) internal successors, (135), 125 states have internal predecessors, (135), 32 states have call successors, (32), 19 states have call predecessors, (32), 17 states have return successors, (33), 25 states have call predecessors, (33), 29 states have call successors, (33) [2022-11-03 03:33:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 200 transitions. [2022-11-03 03:33:15,110 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 200 transitions. Word has length 99 [2022-11-03 03:33:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:15,110 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 200 transitions. [2022-11-03 03:33:15,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:33:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 200 transitions. [2022-11-03 03:33:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:33:15,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:15,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:33:15,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-03 03:33:15,114 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 958645899, now seen corresponding path program 1 times [2022-11-03 03:33:15,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:15,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369031085] [2022-11-03 03:33:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-03 03:33:15,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:15,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369031085] [2022-11-03 03:33:15,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369031085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:15,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:15,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775585448] [2022-11-03 03:33:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:15,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:15,199 INFO L87 Difference]: Start difference. First operand 170 states and 200 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:33:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:15,227 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2022-11-03 03:33:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-11-03 03:33:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:15,229 INFO L225 Difference]: With dead ends: 170 [2022-11-03 03:33:15,229 INFO L226 Difference]: Without dead ends: 170 [2022-11-03 03:33:15,230 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 03:33:15,230 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 25 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:15,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:33:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-03 03:33:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-03 03:33:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.1166666666666667) internal successors, (134), 125 states have internal predecessors, (134), 32 states have call successors, (32), 19 states have call predecessors, (32), 17 states have return successors, (33), 25 states have call predecessors, (33), 29 states have call successors, (33) [2022-11-03 03:33:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 199 transitions. [2022-11-03 03:33:15,236 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 199 transitions. Word has length 99 [2022-11-03 03:33:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:15,237 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 199 transitions. [2022-11-03 03:33:15,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:33:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 199 transitions. [2022-11-03 03:33:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:33:15,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:15,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:15,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-03 03:33:15,239 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash -8114764, now seen corresponding path program 1 times [2022-11-03 03:33:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:15,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744131393] [2022-11-03 03:33:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:15,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-03 03:33:15,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:15,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744131393] [2022-11-03 03:33:15,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744131393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:15,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:15,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:33:15,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424831760] [2022-11-03 03:33:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:15,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:33:15,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:33:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:15,768 INFO L87 Difference]: Start difference. First operand 170 states and 199 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:33:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:16,125 INFO L93 Difference]: Finished difference Result 208 states and 242 transitions. [2022-11-03 03:33:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:33:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 104 [2022-11-03 03:33:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:16,129 INFO L225 Difference]: With dead ends: 208 [2022-11-03 03:33:16,129 INFO L226 Difference]: Without dead ends: 204 [2022-11-03 03:33:16,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:33:16,130 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 158 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:16,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 287 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-03 03:33:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 170. [2022-11-03 03:33:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 119 states have (on average 1.1092436974789917) internal successors, (132), 125 states have internal predecessors, (132), 32 states have call successors, (32), 20 states have call predecessors, (32), 18 states have return successors, (33), 24 states have call predecessors, (33), 29 states have call successors, (33) [2022-11-03 03:33:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 197 transitions. [2022-11-03 03:33:16,135 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 197 transitions. Word has length 104 [2022-11-03 03:33:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:16,135 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 197 transitions. [2022-11-03 03:33:16,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:33:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 197 transitions. [2022-11-03 03:33:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-03 03:33:16,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:16,137 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:16,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-03 03:33:16,138 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash -196019302, now seen corresponding path program 1 times [2022-11-03 03:33:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:16,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881640747] [2022-11-03 03:33:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:16,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-03 03:33:16,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881640747] [2022-11-03 03:33:16,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881640747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222065472] [2022-11-03 03:33:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:16,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:16,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:17,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:33:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:17,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:33:17,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-03 03:33:17,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:33:17,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222065472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:17,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:33:17,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-11-03 03:33:17,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425687081] [2022-11-03 03:33:17,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:17,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:33:17,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:33:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:33:17,542 INFO L87 Difference]: Start difference. First operand 170 states and 197 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 03:33:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:17,782 INFO L93 Difference]: Finished difference Result 196 states and 226 transitions. [2022-11-03 03:33:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:17,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 126 [2022-11-03 03:33:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:17,784 INFO L225 Difference]: With dead ends: 196 [2022-11-03 03:33:17,785 INFO L226 Difference]: Without dead ends: 192 [2022-11-03 03:33:17,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:33:17,786 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 111 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:17,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 417 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-03 03:33:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 155. [2022-11-03 03:33:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 109 states have (on average 1.091743119266055) internal successors, (119), 115 states have internal predecessors, (119), 28 states have call successors, (28), 17 states have call predecessors, (28), 17 states have return successors, (30), 22 states have call predecessors, (30), 26 states have call successors, (30) [2022-11-03 03:33:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2022-11-03 03:33:17,792 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 126 [2022-11-03 03:33:17,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:17,793 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2022-11-03 03:33:17,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 03:33:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2022-11-03 03:33:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 03:33:17,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:17,796 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:17,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:33:18,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-03 03:33:18,022 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-03 03:33:18,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1551808924, now seen corresponding path program 1 times [2022-11-03 03:33:18,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:18,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356869747] [2022-11-03 03:33:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:18,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-03 03:33:18,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:18,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356869747] [2022-11-03 03:33:18,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356869747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:18,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:18,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 03:33:18,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043541383] [2022-11-03 03:33:18,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:18,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:33:18,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:33:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:33:18,955 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-03 03:33:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:19,591 INFO L93 Difference]: Finished difference Result 175 states and 202 transitions. [2022-11-03 03:33:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:33:19,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 128 [2022-11-03 03:33:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:19,593 INFO L225 Difference]: With dead ends: 175 [2022-11-03 03:33:19,593 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:33:19,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:33:19,594 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 301 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:19,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 439 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:33:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:33:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:33:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 03:33:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:33:19,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2022-11-03 03:33:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:19,595 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:33:19,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-03 03:33:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:33:19,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:33:19,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-11-03 03:33:19,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-11-03 03:33:19,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-03 03:33:19,605 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] [2022-11-03 03:33:19,607 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:33:19,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:33:19 BoogieIcfgContainer [2022-11-03 03:33:19,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:33:19,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:33:19,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:33:19,613 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:33:19,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:58" (3/4) ... [2022-11-03 03:33:19,617 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:33:19,625 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoBuildDeviceIoControlRequest [2022-11-03 03:33:19,625 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2022-11-03 03:33:19,625 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfForwardIrpSynchronous [2022-11-03 03:33:19,625 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2022-11-03 03:33:19,626 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2022-11-03 03:33:19,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2022-11-03 03:33:19,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfIrpCompletion [2022-11-03 03:33:19,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2022-11-03 03:33:19,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfIoCompletion [2022-11-03 03:33:19,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 97 nodes and edges [2022-11-03 03:33:19,653 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2022-11-03 03:33:19,655 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 03:33:19,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 03:33:19,768 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:33:19,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:33:19,768 INFO L158 Benchmark]: Toolchain (without parser) took 23233.05ms. Allocated memory was 130.0MB in the beginning and 308.3MB in the end (delta: 178.3MB). Free memory was 95.4MB in the beginning and 144.8MB in the end (delta: -49.4MB). Peak memory consumption was 128.6MB. Max. memory is 16.1GB. [2022-11-03 03:33:19,769 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 61.2MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:33:19,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.58ms. Allocated memory is still 130.0MB. Free memory was 95.1MB in the beginning and 97.5MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 03:33:19,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.78ms. Allocated memory is still 130.0MB. Free memory was 97.1MB in the beginning and 92.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:33:19,770 INFO L158 Benchmark]: Boogie Preprocessor took 51.41ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 89.2MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:33:19,770 INFO L158 Benchmark]: RCFGBuilder took 1365.15ms. Allocated memory is still 130.0MB. Free memory was 89.2MB in the beginning and 72.0MB in the end (delta: 17.2MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2022-11-03 03:33:19,770 INFO L158 Benchmark]: TraceAbstraction took 21065.37ms. Allocated memory was 130.0MB in the beginning and 308.3MB in the end (delta: 178.3MB). Free memory was 71.4MB in the beginning and 159.5MB in the end (delta: -88.1MB). Peak memory consumption was 89.3MB. Max. memory is 16.1GB. [2022-11-03 03:33:19,770 INFO L158 Benchmark]: Witness Printer took 155.41ms. Allocated memory is still 308.3MB. Free memory was 159.5MB in the beginning and 144.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 03:33:19,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 61.2MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.58ms. Allocated memory is still 130.0MB. Free memory was 95.1MB in the beginning and 97.5MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.78ms. Allocated memory is still 130.0MB. Free memory was 97.1MB in the beginning and 92.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.41ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 89.2MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1365.15ms. Allocated memory is still 130.0MB. Free memory was 89.2MB in the beginning and 72.0MB in the end (delta: 17.2MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * TraceAbstraction took 21065.37ms. Allocated memory was 130.0MB in the beginning and 308.3MB in the end (delta: 178.3MB). Free memory was 71.4MB in the beginning and 159.5MB in the end (delta: -88.1MB). Peak memory consumption was 89.3MB. Max. memory is 16.1GB. * Witness Printer took 155.41ms. Allocated memory is still 308.3MB. Free memory was 159.5MB in the beginning and 144.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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 - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 647]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 190 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 21.0s, OverallIterations: 45, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7227 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7084 mSDsluCounter, 23552 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16898 mSDsCounter, 984 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8164 IncrementalHoareTripleChecker+Invalid, 9148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 984 mSolverCounterUnsat, 8555 mSDtfsCounter, 8164 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 220 SyntacticMatches, 7 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=691occurred in iteration=14, InterpolantAutomatonStates: 241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 45 MinimizatonAttempts, 1632 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 2000 NumberOfCodeBlocks, 2000 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1954 ConstructedInterpolants, 0 QuantifiedInterpolants, 5519 SizeOfPredicates, 6 NumberOfNonLiveVariables, 942 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 46 InterpolantComputations, 45 PerfectInterpolantSequences, 564/568 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 03:33:19,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96b1062e-ea74-4d27-93cf-485cdbec6e9e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE