./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/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_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b7f8b3e28158be51052658f61d1f661e83e6ea90b60d26d9d4e1a96348eb351 --- 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 04:07:39,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:07:39,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:07:39,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:07:39,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:07:39,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:07:39,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:07:39,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:07:39,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:07:39,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:07:39,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:07:39,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:07:39,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:07:39,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:07:39,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:07:39,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:07:39,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:07:39,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:07:39,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:07:39,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:07:39,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:07:39,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:07:39,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:07:39,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:07:39,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:07:39,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:07:39,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:07:39,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:07:39,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:07:39,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:07:39,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:07:39,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:07:39,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:07:39,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:07:39,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:07:39,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:07:39,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:07:39,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:07:39,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:07:39,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:07:39,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:07:39,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:07:39,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:07:39,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:07:39,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:07:39,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:07:39,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:07:39,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:07:39,218 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:07:39,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:07:39,219 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:07:39,219 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:07:39,220 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:07:39,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:07:39,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:07:39,221 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:07:39,221 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:07:39,221 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:07:39,221 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:07:39,221 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:07:39,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:07:39,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:07:39,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:07:39,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:07:39,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:07:39,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:07:39,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:07:39,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:07:39,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:07:39,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:07:39,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:07:39,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:07:39,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:07:39,226 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:07:39,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:07:39,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:07:39,227 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:07:39,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:07:39,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:07:39,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:07:39,227 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_9e1a37ad-9b37-4a45-863a-d851fa51a045/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b7f8b3e28158be51052658f61d1f661e83e6ea90b60d26d9d4e1a96348eb351 [2022-11-03 04:07:39,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:07:39,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:07:39,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:07:39,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:07:39,605 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:07:39,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c [2022-11-03 04:07:39,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/922d2cec7/d2d31aed80cb48a19fb68b1bfb364f1e/FLAG6dc5c852a [2022-11-03 04:07:40,517 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:07:40,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c [2022-11-03 04:07:40,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/922d2cec7/d2d31aed80cb48a19fb68b1bfb364f1e/FLAG6dc5c852a [2022-11-03 04:07:40,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/922d2cec7/d2d31aed80cb48a19fb68b1bfb364f1e [2022-11-03 04:07:40,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:07:40,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:07:40,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:07:40,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:07:40,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:07:40,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:40" (1/1) ... [2022-11-03 04:07:40,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21169fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:40, skipping insertion in model container [2022-11-03 04:07:40,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:40" (1/1) ... [2022-11-03 04:07:40,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:07:40,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:07:41,020 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_9e1a37ad-9b37-4a45-863a-d851fa51a045/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c[1014,1027] [2022-11-03 04:07:41,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:07:41,537 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:07:41,548 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_9e1a37ad-9b37-4a45-863a-d851fa51a045/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c[1014,1027] [2022-11-03 04:07:41,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:07:41,897 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:07:41,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41 WrapperNode [2022-11-03 04:07:41,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:07:41,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:07:41,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:07:41,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:07:41,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:41,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,412 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4201 [2022-11-03 04:07:42,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:07:42,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:07:42,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:07:42,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:07:42,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:07:42,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:07:42,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:07:42,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:07:42,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (1/1) ... [2022-11-03 04:07:42,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:07:42,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:42,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:07:42,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:07:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:07:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:07:43,857 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:07:43,860 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:19:24,805 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:20:17,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:20:17,175 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:20:17,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:20:17 BoogieIcfgContainer [2022-11-03 04:20:17,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:20:17,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:20:17,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:20:17,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:20:17,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:07:40" (1/3) ... [2022-11-03 04:20:17,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715c7684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:20:17, skipping insertion in model container [2022-11-03 04:20:17,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:41" (2/3) ... [2022-11-03 04:20:17,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715c7684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:20:17, skipping insertion in model container [2022-11-03 04:20:17,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:20:17" (3/3) ... [2022-11-03 04:20:17,185 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c [2022-11-03 04:20:17,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:20:17,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:20:17,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:20:17,260 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3cc620e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:20:17,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:20:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:20:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:20:17,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:17,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:20:17,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 51876159, now seen corresponding path program 1 times [2022-11-03 04:20:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:20:17,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594418314] [2022-11-03 04:20:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:20:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:20:18,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:20:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:20:19,167 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:20:19,169 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:20:19,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:20:19,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:20:19,178 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 04:20:19,182 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:20:19,228 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 04:20:19,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:20:19 BoogieIcfgContainer [2022-11-03 04:20:19,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:20:19,255 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:20:19,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:20:19,256 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:20:19,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:20:17" (3/4) ... [2022-11-03 04:20:19,260 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:20:19,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:20:19,262 INFO L158 Benchmark]: Toolchain (without parser) took 758660.94ms. Allocated memory was 119.5MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 73.0MB in the beginning and 2.2GB in the end (delta: -2.2GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2022-11-03 04:20:19,263 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:20:19,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1295.34ms. Allocated memory was 119.5MB in the beginning and 167.8MB in the end (delta: 48.2MB). Free memory was 72.8MB in the beginning and 90.1MB in the end (delta: -17.3MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-11-03 04:20:19,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 514.51ms. Allocated memory is still 167.8MB. Free memory was 90.1MB in the beginning and 79.5MB in the end (delta: 10.6MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. [2022-11-03 04:20:19,271 INFO L158 Benchmark]: Boogie Preprocessor took 436.98ms. Allocated memory was 167.8MB in the beginning and 335.5MB in the end (delta: 167.8MB). Free memory was 79.5MB in the beginning and 228.9MB in the end (delta: -149.4MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2022-11-03 04:20:19,272 INFO L158 Benchmark]: RCFGBuilder took 754326.09ms. Allocated memory was 335.5MB in the beginning and 5.2GB in the end (delta: 4.8GB). Free memory was 228.9MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2022-11-03 04:20:19,274 INFO L158 Benchmark]: TraceAbstraction took 2073.85ms. Allocated memory is still 5.2GB. Free memory was 2.4GB in the beginning and 2.2GB in the end (delta: 194.0MB). Peak memory consumption was 192.9MB. Max. memory is 16.1GB. [2022-11-03 04:20:19,274 INFO L158 Benchmark]: Witness Printer took 5.19ms. Allocated memory is still 5.2GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:20:19,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1295.34ms. Allocated memory was 119.5MB in the beginning and 167.8MB in the end (delta: 48.2MB). Free memory was 72.8MB in the beginning and 90.1MB in the end (delta: -17.3MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 514.51ms. Allocated memory is still 167.8MB. Free memory was 90.1MB in the beginning and 79.5MB in the end (delta: 10.6MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 436.98ms. Allocated memory was 167.8MB in the beginning and 335.5MB in the end (delta: 167.8MB). Free memory was 79.5MB in the beginning and 228.9MB in the end (delta: -149.4MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * RCFGBuilder took 754326.09ms. Allocated memory was 335.5MB in the beginning and 5.2GB in the end (delta: 4.8GB). Free memory was 228.9MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * TraceAbstraction took 2073.85ms. Allocated memory is still 5.2GB. Free memory was 2.4GB in the beginning and 2.2GB in the end (delta: 194.0MB). Peak memory consumption was 192.9MB. Max. memory is 16.1GB. * Witness Printer took 5.19ms. Allocated memory is still 5.2GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 322, overapproximation of bitwiseAnd at line 194, overapproximation of bitwiseXOr at line 317. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_58 = 0; [L39] const SORT_2 var_63 = 1; [L40] const SORT_2 var_64 = 24; [L41] const SORT_2 var_71 = 0; [L42] const SORT_3 var_383 = 0; [L43] const SORT_4 var_385 = 1; [L45] SORT_1 input_69; [L46] SORT_1 input_70; [L47] SORT_1 input_72; [L48] SORT_1 input_73; [L49] SORT_1 input_81; [L50] SORT_1 input_82; [L51] SORT_1 input_83; [L52] SORT_1 input_84; [L53] SORT_1 input_94; [L54] SORT_1 input_95; [L55] SORT_1 input_96; [L56] SORT_1 input_97; [L57] SORT_1 input_109; [L58] SORT_1 input_110; [L59] SORT_1 input_120; [L60] SORT_1 input_121; [L61] SORT_1 input_129; [L62] SORT_1 input_130; [L63] SORT_1 input_131; [L64] SORT_1 input_132; [L65] SORT_1 input_142; [L66] SORT_1 input_143; [L67] SORT_1 input_144; [L68] SORT_1 input_145; [L69] SORT_1 input_157; [L70] SORT_1 input_158; [L71] SORT_1 input_159; [L72] SORT_1 input_160; [L73] SORT_1 input_174; [L74] SORT_1 input_175; [L75] SORT_1 input_187; [L76] SORT_1 input_188; [L77] SORT_1 input_198; [L78] SORT_1 input_199; [L79] SORT_1 input_200; [L80] SORT_1 input_201; [L81] SORT_1 input_213; [L82] SORT_1 input_214; [L83] SORT_1 input_215; [L84] SORT_1 input_216; [L85] SORT_1 input_230; [L86] SORT_1 input_231; [L87] SORT_1 input_232; [L88] SORT_1 input_233; [L89] SORT_1 input_249; [L90] SORT_1 input_250; [L91] SORT_1 input_264; [L92] SORT_1 input_265; [L93] SORT_1 input_277; [L94] SORT_1 input_278; [L95] SORT_1 input_288; [L96] SORT_1 input_289; [L97] SORT_1 input_301; [L98] SORT_1 input_302; [L99] SORT_1 input_336; [L100] SORT_1 input_337; [L101] SORT_1 input_345; [L102] SORT_1 input_346; [L103] SORT_1 input_356; [L104] SORT_1 input_357; [L106] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L107] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L108] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L109] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L110] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L111] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L112] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L113] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L114] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L115] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L116] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L117] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L118] SORT_2 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L119] SORT_2 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L120] SORT_2 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L121] SORT_2 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L122] SORT_2 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L123] SORT_2 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L124] SORT_2 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L125] SORT_2 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L126] SORT_2 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L127] SORT_2 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L128] SORT_2 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L129] SORT_2 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L130] SORT_2 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L131] SORT_2 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L132] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L133] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L135] SORT_2 init_7_arg_1 = var_5; [L136] state_6 = init_7_arg_1 [L137] SORT_2 init_9_arg_1 = var_5; [L138] state_8 = init_9_arg_1 [L139] SORT_2 init_11_arg_1 = var_5; [L140] state_10 = init_11_arg_1 [L141] SORT_2 init_13_arg_1 = var_5; [L142] state_12 = init_13_arg_1 [L143] SORT_2 init_15_arg_1 = var_5; [L144] state_14 = init_15_arg_1 [L145] SORT_2 init_17_arg_1 = var_5; [L146] state_16 = init_17_arg_1 [L147] SORT_2 init_19_arg_1 = var_5; [L148] state_18 = init_19_arg_1 [L149] SORT_2 init_21_arg_1 = var_5; [L150] state_20 = init_21_arg_1 [L151] SORT_2 init_23_arg_1 = var_5; [L152] state_22 = init_23_arg_1 [L153] SORT_2 init_25_arg_1 = var_5; [L154] state_24 = init_25_arg_1 [L155] SORT_2 init_27_arg_1 = var_5; [L156] state_26 = init_27_arg_1 [L157] SORT_2 init_29_arg_1 = var_5; [L158] state_28 = init_29_arg_1 [L159] SORT_2 init_31_arg_1 = var_5; [L160] state_30 = init_31_arg_1 [L161] SORT_2 init_33_arg_1 = var_5; [L162] state_32 = init_33_arg_1 [L163] SORT_2 init_35_arg_1 = var_5; [L164] state_34 = init_35_arg_1 [L165] SORT_2 init_37_arg_1 = var_5; [L166] state_36 = init_37_arg_1 [L167] SORT_2 init_39_arg_1 = var_5; [L168] state_38 = init_39_arg_1 [L169] SORT_2 init_41_arg_1 = var_5; [L170] state_40 = init_41_arg_1 [L171] SORT_2 init_43_arg_1 = var_5; [L172] state_42 = init_43_arg_1 [L173] SORT_2 init_45_arg_1 = var_5; [L174] state_44 = init_45_arg_1 [L175] SORT_2 init_47_arg_1 = var_5; [L176] state_46 = init_47_arg_1 [L177] SORT_2 init_49_arg_1 = var_5; [L178] state_48 = init_49_arg_1 [L179] SORT_2 init_51_arg_1 = var_5; [L180] state_50 = init_51_arg_1 [L181] SORT_2 init_53_arg_1 = var_5; [L182] state_52 = init_53_arg_1 [L183] SORT_2 init_55_arg_1 = var_5; [L184] state_54 = init_55_arg_1 [L185] SORT_2 init_57_arg_1 = var_5; [L186] state_56 = init_57_arg_1 [L187] SORT_1 init_60_arg_1 = var_58; [L188] state_59 = init_60_arg_1 [L189] SORT_1 init_62_arg_1 = var_58; [L190] state_61 = init_62_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_38=0, state_40=0, state_42=0, state_44=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_59=0, state_6=0, state_61=0, state_8=0, var_383=0, var_385=1, var_5=0, var_58=0, var_63=1, var_64=24, var_71=0] [L193] input_69 = __VERIFIER_nondet_uchar() [L194] input_69 = input_69 & mask_SORT_1 [L195] input_70 = __VERIFIER_nondet_uchar() [L196] input_70 = input_70 & mask_SORT_1 [L197] input_72 = __VERIFIER_nondet_uchar() [L198] input_72 = input_72 & mask_SORT_1 [L199] input_73 = __VERIFIER_nondet_uchar() [L200] input_73 = input_73 & mask_SORT_1 [L201] input_81 = __VERIFIER_nondet_uchar() [L202] input_81 = input_81 & mask_SORT_1 [L203] input_82 = __VERIFIER_nondet_uchar() [L204] input_82 = input_82 & mask_SORT_1 [L205] input_83 = __VERIFIER_nondet_uchar() [L206] input_83 = input_83 & mask_SORT_1 [L207] input_84 = __VERIFIER_nondet_uchar() [L208] input_84 = input_84 & mask_SORT_1 [L209] input_94 = __VERIFIER_nondet_uchar() [L210] input_94 = input_94 & mask_SORT_1 [L211] input_95 = __VERIFIER_nondet_uchar() [L212] input_95 = input_95 & mask_SORT_1 [L213] input_96 = __VERIFIER_nondet_uchar() [L214] input_96 = input_96 & mask_SORT_1 [L215] input_97 = __VERIFIER_nondet_uchar() [L216] input_97 = input_97 & mask_SORT_1 [L217] input_109 = __VERIFIER_nondet_uchar() [L218] input_109 = input_109 & mask_SORT_1 [L219] input_110 = __VERIFIER_nondet_uchar() [L220] input_110 = input_110 & mask_SORT_1 [L221] input_120 = __VERIFIER_nondet_uchar() [L222] input_120 = input_120 & mask_SORT_1 [L223] input_121 = __VERIFIER_nondet_uchar() [L224] input_121 = input_121 & mask_SORT_1 [L225] input_129 = __VERIFIER_nondet_uchar() [L226] input_129 = input_129 & mask_SORT_1 [L227] input_130 = __VERIFIER_nondet_uchar() [L228] input_130 = input_130 & mask_SORT_1 [L229] input_131 = __VERIFIER_nondet_uchar() [L230] input_131 = input_131 & mask_SORT_1 [L231] input_132 = __VERIFIER_nondet_uchar() [L232] input_132 = input_132 & mask_SORT_1 [L233] input_142 = __VERIFIER_nondet_uchar() [L234] input_142 = input_142 & mask_SORT_1 [L235] input_143 = __VERIFIER_nondet_uchar() [L236] input_143 = input_143 & mask_SORT_1 [L237] input_144 = __VERIFIER_nondet_uchar() [L238] input_144 = input_144 & mask_SORT_1 [L239] input_145 = __VERIFIER_nondet_uchar() [L240] input_145 = input_145 & mask_SORT_1 [L241] input_157 = __VERIFIER_nondet_uchar() [L242] input_157 = input_157 & mask_SORT_1 [L243] input_158 = __VERIFIER_nondet_uchar() [L244] input_158 = input_158 & mask_SORT_1 [L245] input_159 = __VERIFIER_nondet_uchar() [L246] input_159 = input_159 & mask_SORT_1 [L247] input_160 = __VERIFIER_nondet_uchar() [L248] input_160 = input_160 & mask_SORT_1 [L249] input_174 = __VERIFIER_nondet_uchar() [L250] input_174 = input_174 & mask_SORT_1 [L251] input_175 = __VERIFIER_nondet_uchar() [L252] input_175 = input_175 & mask_SORT_1 [L253] input_187 = __VERIFIER_nondet_uchar() [L254] input_187 = input_187 & mask_SORT_1 [L255] input_188 = __VERIFIER_nondet_uchar() [L256] input_188 = input_188 & mask_SORT_1 [L257] input_198 = __VERIFIER_nondet_uchar() [L258] input_198 = input_198 & mask_SORT_1 [L259] input_199 = __VERIFIER_nondet_uchar() [L260] input_199 = input_199 & mask_SORT_1 [L261] input_200 = __VERIFIER_nondet_uchar() [L262] input_200 = input_200 & mask_SORT_1 [L263] input_201 = __VERIFIER_nondet_uchar() [L264] input_201 = input_201 & mask_SORT_1 [L265] input_213 = __VERIFIER_nondet_uchar() [L266] input_213 = input_213 & mask_SORT_1 [L267] input_214 = __VERIFIER_nondet_uchar() [L268] input_214 = input_214 & mask_SORT_1 [L269] input_215 = __VERIFIER_nondet_uchar() [L270] input_215 = input_215 & mask_SORT_1 [L271] input_216 = __VERIFIER_nondet_uchar() [L272] input_216 = input_216 & mask_SORT_1 [L273] input_230 = __VERIFIER_nondet_uchar() [L274] input_230 = input_230 & mask_SORT_1 [L275] input_231 = __VERIFIER_nondet_uchar() [L276] input_231 = input_231 & mask_SORT_1 [L277] input_232 = __VERIFIER_nondet_uchar() [L278] input_232 = input_232 & mask_SORT_1 [L279] input_233 = __VERIFIER_nondet_uchar() [L280] input_233 = input_233 & mask_SORT_1 [L281] input_249 = __VERIFIER_nondet_uchar() [L282] input_249 = input_249 & mask_SORT_1 [L283] input_250 = __VERIFIER_nondet_uchar() [L284] input_250 = input_250 & mask_SORT_1 [L285] input_264 = __VERIFIER_nondet_uchar() [L286] input_264 = input_264 & mask_SORT_1 [L287] input_265 = __VERIFIER_nondet_uchar() [L288] input_265 = input_265 & mask_SORT_1 [L289] input_277 = __VERIFIER_nondet_uchar() [L290] input_277 = input_277 & mask_SORT_1 [L291] input_278 = __VERIFIER_nondet_uchar() [L292] input_278 = input_278 & mask_SORT_1 [L293] input_288 = __VERIFIER_nondet_uchar() [L294] input_288 = input_288 & mask_SORT_1 [L295] input_289 = __VERIFIER_nondet_uchar() [L296] input_289 = input_289 & mask_SORT_1 [L297] input_301 = __VERIFIER_nondet_uchar() [L298] input_301 = input_301 & mask_SORT_1 [L299] input_302 = __VERIFIER_nondet_uchar() [L300] input_302 = input_302 & mask_SORT_1 [L301] input_336 = __VERIFIER_nondet_uchar() [L302] input_336 = input_336 & mask_SORT_1 [L303] input_337 = __VERIFIER_nondet_uchar() [L304] input_337 = input_337 & mask_SORT_1 [L305] input_345 = __VERIFIER_nondet_uchar() [L306] input_345 = input_345 & mask_SORT_1 [L307] input_346 = __VERIFIER_nondet_uchar() [L308] input_346 = input_346 & mask_SORT_1 [L309] input_356 = __VERIFIER_nondet_uchar() [L310] input_356 = input_356 & mask_SORT_1 [L311] input_357 = __VERIFIER_nondet_uchar() [L312] input_357 = input_357 & mask_SORT_1 [L315] SORT_2 var_65_arg_0 = var_64; [L316] SORT_2 var_65_arg_1 = state_56; [L317] SORT_2 var_65 = var_65_arg_0 ^ var_65_arg_1; [L318] var_65 = var_65 & mask_SORT_2 [L319] SORT_2 var_66_arg_0 = var_63; [L320] SORT_2 var_66_arg_1 = var_65; [L321] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L322] SORT_1 var_67_arg_0 = ~state_61; [L323] var_67_arg_0 = var_67_arg_0 & mask_SORT_1 [L324] SORT_1 var_67_arg_1 = var_66; [L325] SORT_1 var_67 = var_67_arg_0 & var_67_arg_1; [L326] var_67 = var_67 & mask_SORT_1 [L327] SORT_1 bad_68_arg_0 = var_67; [L328] CALL __VERIFIER_assert(!(bad_68_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 04:20:19,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/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_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b7f8b3e28158be51052658f61d1f661e83e6ea90b60d26d9d4e1a96348eb351 --- 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 04:20:21,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:20:21,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:20:21,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:20:22,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:20:22,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:20:22,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:20:22,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:20:22,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:20:22,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:20:22,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:20:22,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:20:22,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:20:22,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:20:22,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:20:22,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:20:22,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:20:22,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:20:22,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:20:22,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:20:22,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:20:22,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:20:22,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:20:22,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:20:22,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:20:22,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:20:22,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:20:22,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:20:22,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:20:22,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:20:22,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:20:22,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:20:22,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:20:22,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:20:22,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:20:22,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:20:22,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:20:22,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:20:22,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:20:22,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:20:22,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:20:22,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 04:20:22,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:20:22,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:20:22,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:20:22,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:20:22,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:20:22,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:20:22,163 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:20:22,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:20:22,164 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:20:22,164 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:20:22,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:20:22,166 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:20:22,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:20:22,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:20:22,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:20:22,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:20:22,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:20:22,169 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:20:22,169 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:20:22,169 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:20:22,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:20:22,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:20:22,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:20:22,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:20:22,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:20:22,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:20:22,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:20:22,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:20:22,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:20:22,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:20:22,172 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:20:22,173 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:20:22,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:20:22,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:20:22,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:20:22,174 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b7f8b3e28158be51052658f61d1f661e83e6ea90b60d26d9d4e1a96348eb351 [2022-11-03 04:20:22,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:20:22,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:20:22,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:20:22,582 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:20:22,583 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:20:22,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c [2022-11-03 04:20:22,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/bab0a1c9e/3ec19392c93848f9a5f7f92d298c265c/FLAG121e762f4 [2022-11-03 04:20:23,322 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:20:23,322 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c [2022-11-03 04:20:23,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/bab0a1c9e/3ec19392c93848f9a5f7f92d298c265c/FLAG121e762f4 [2022-11-03 04:20:23,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/data/bab0a1c9e/3ec19392c93848f9a5f7f92d298c265c [2022-11-03 04:20:23,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:20:23,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:20:23,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:20:23,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:20:23,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:20:23,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:20:23" (1/1) ... [2022-11-03 04:20:23,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5faadf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:23, skipping insertion in model container [2022-11-03 04:20:23,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:20:23" (1/1) ... [2022-11-03 04:20:23,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:20:23,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:20:23,854 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_9e1a37ad-9b37-4a45-863a-d851fa51a045/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c[1014,1027] [2022-11-03 04:20:24,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:20:24,358 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:20:24,394 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_9e1a37ad-9b37-4a45-863a-d851fa51a045/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c[1014,1027] [2022-11-03 04:20:24,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:20:24,611 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:20:24,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24 WrapperNode [2022-11-03 04:20:24,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:20:24,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:20:24,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:20:24,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:20:24,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:24,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:24,882 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4201 [2022-11-03 04:20:24,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:20:24,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:20:24,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:20:24,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:20:24,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:24,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:24,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:24,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:25,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:25,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:25,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:25,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:25,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:20:25,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:20:25,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:20:25,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:20:25,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (1/1) ... [2022-11-03 04:20:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:20:25,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:20:25,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:20:25,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:20:25,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:20:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:20:25,908 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:20:25,910 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:20:30,681 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:20:30,699 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:20:30,702 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:20:30,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:20:30 BoogieIcfgContainer [2022-11-03 04:20:30,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:20:30,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:20:30,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:20:30,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:20:30,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:20:23" (1/3) ... [2022-11-03 04:20:30,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faa8416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:20:30, skipping insertion in model container [2022-11-03 04:20:30,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:20:24" (2/3) ... [2022-11-03 04:20:30,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faa8416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:20:30, skipping insertion in model container [2022-11-03 04:20:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:20:30" (3/3) ... [2022-11-03 04:20:30,716 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peg_solitaire.4.prop1-func-interl.c [2022-11-03 04:20:30,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:20:30,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:20:30,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:20:30,823 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@473d870e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:20:30,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:20:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 491 states, 489 states have (on average 1.4989775051124745) internal successors, (733), 490 states have internal predecessors, (733), 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 04:20:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 04:20:30,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:30,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 04:20:30,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 04:20:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:30,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29579973] [2022-11-03 04:20:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:30,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:30,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:30,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:30,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:20:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:31,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:20:31,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:31,869 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 04:20:31,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:31,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:31,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29579973] [2022-11-03 04:20:31,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29579973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:31,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:31,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:20:31,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38534131] [2022-11-03 04:20:31,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:31,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:20:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:20:31,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:20:31,942 INFO L87 Difference]: Start difference. First operand has 491 states, 489 states have (on average 1.4989775051124745) internal successors, (733), 490 states have internal predecessors, (733), 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 04:20:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:32,835 INFO L93 Difference]: Finished difference Result 1460 states and 2190 transitions. [2022-11-03 04:20:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:20:32,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-03 04:20:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:32,854 INFO L225 Difference]: With dead ends: 1460 [2022-11-03 04:20:32,855 INFO L226 Difference]: Without dead ends: 971 [2022-11-03 04:20:32,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:20:32,863 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1443 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:32,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 2031 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:20:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-03 04:20:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 489. [2022-11-03 04:20:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.4938524590163935) internal successors, (729), 488 states have internal predecessors, (729), 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 04:20:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 729 transitions. [2022-11-03 04:20:32,925 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 729 transitions. Word has length 5 [2022-11-03 04:20:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:32,925 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 729 transitions. [2022-11-03 04:20:32,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 04:20:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 729 transitions. [2022-11-03 04:20:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:32,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:32,950 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:32,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 04:20:33,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:33,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:33,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1546134177, now seen corresponding path program 1 times [2022-11-03 04:20:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:33,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046205232] [2022-11-03 04:20:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:33,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:33,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:33,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:33,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:20:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:34,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:34,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:35,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:35,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:35,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046205232] [2022-11-03 04:20:35,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046205232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:35,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:35,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083238824] [2022-11-03 04:20:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:35,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:35,017 INFO L87 Difference]: Start difference. First operand 489 states and 729 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:35,673 INFO L93 Difference]: Finished difference Result 1940 states and 2899 transitions. [2022-11-03 04:20:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:20:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:35,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:35,679 INFO L225 Difference]: With dead ends: 1940 [2022-11-03 04:20:35,679 INFO L226 Difference]: Without dead ends: 1455 [2022-11-03 04:20:35,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:20:35,682 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 2850 mSDsluCounter, 3601 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 4340 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:35,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 4340 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 22 Unchecked, 0.5s Time] [2022-11-03 04:20:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2022-11-03 04:20:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 503. [2022-11-03 04:20:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.4920318725099602) internal successors, (749), 502 states have internal predecessors, (749), 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 04:20:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 749 transitions. [2022-11-03 04:20:35,704 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 749 transitions. Word has length 488 [2022-11-03 04:20:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:35,705 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 749 transitions. [2022-11-03 04:20:35,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:35,705 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 749 transitions. [2022-11-03 04:20:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:35,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:35,713 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:35,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:35,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:35,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash 795320289, now seen corresponding path program 1 times [2022-11-03 04:20:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:35,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595312494] [2022-11-03 04:20:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:35,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:35,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:35,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:35,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:20:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:37,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:37,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:37,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:37,859 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:37,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595312494] [2022-11-03 04:20:37,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595312494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:37,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:37,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857342036] [2022-11-03 04:20:37,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:37,864 INFO L87 Difference]: Start difference. First operand 503 states and 749 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:38,644 INFO L93 Difference]: Finished difference Result 1940 states and 2898 transitions. [2022-11-03 04:20:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:20:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:38,652 INFO L225 Difference]: With dead ends: 1940 [2022-11-03 04:20:38,652 INFO L226 Difference]: Without dead ends: 1455 [2022-11-03 04:20:38,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:20:38,655 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 2813 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2813 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:38,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2813 Valid, 4422 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 35 Unchecked, 0.7s Time] [2022-11-03 04:20:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2022-11-03 04:20:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 517. [2022-11-03 04:20:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.4903100775193798) internal successors, (769), 516 states have internal predecessors, (769), 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 04:20:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 769 transitions. [2022-11-03 04:20:38,678 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 769 transitions. Word has length 488 [2022-11-03 04:20:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:38,679 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 769 transitions. [2022-11-03 04:20:38,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:38,680 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 769 transitions. [2022-11-03 04:20:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:38,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:38,692 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:38,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:38,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:38,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2035879395, now seen corresponding path program 1 times [2022-11-03 04:20:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:38,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469240731] [2022-11-03 04:20:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:38,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:38,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:38,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:20:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:40,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:40,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:40,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:40,859 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469240731] [2022-11-03 04:20:40,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469240731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:40,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:40,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197984689] [2022-11-03 04:20:40,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:40,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:40,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:40,863 INFO L87 Difference]: Start difference. First operand 517 states and 769 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:41,183 INFO L93 Difference]: Finished difference Result 1050 states and 1565 transitions. [2022-11-03 04:20:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:20:41,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:41,187 INFO L225 Difference]: With dead ends: 1050 [2022-11-03 04:20:41,187 INFO L226 Difference]: Without dead ends: 565 [2022-11-03 04:20:41,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:20:41,189 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 93 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:41,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 2980 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 04:20:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-03 04:20:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2022-11-03 04:20:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.4875886524822695) internal successors, (839), 564 states have internal predecessors, (839), 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 04:20:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 839 transitions. [2022-11-03 04:20:41,202 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 839 transitions. Word has length 488 [2022-11-03 04:20:41,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:41,202 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 839 transitions. [2022-11-03 04:20:41,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 839 transitions. [2022-11-03 04:20:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:41,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:41,214 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:41,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:41,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:41,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:41,428 INFO L85 PathProgramCache]: Analyzing trace with hash -747556255, now seen corresponding path program 1 times [2022-11-03 04:20:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593122189] [2022-11-03 04:20:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:41,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:41,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:41,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:41,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:20:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:42,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:42,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:43,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:43,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593122189] [2022-11-03 04:20:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593122189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:43,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:43,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836855099] [2022-11-03 04:20:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:43,206 INFO L87 Difference]: Start difference. First operand 565 states and 839 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:43,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:43,592 INFO L93 Difference]: Finished difference Result 1630 states and 2428 transitions. [2022-11-03 04:20:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:20:43,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:43,598 INFO L225 Difference]: With dead ends: 1630 [2022-11-03 04:20:43,598 INFO L226 Difference]: Without dead ends: 1145 [2022-11-03 04:20:43,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:20:43,601 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 873 mSDsluCounter, 3191 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:43,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 4029 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2022-11-03 04:20:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-11-03 04:20:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 661. [2022-11-03 04:20:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.4833333333333334) internal successors, (979), 660 states have internal predecessors, (979), 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 04:20:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 979 transitions. [2022-11-03 04:20:43,622 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 979 transitions. Word has length 488 [2022-11-03 04:20:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:43,623 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 979 transitions. [2022-11-03 04:20:43,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 979 transitions. [2022-11-03 04:20:43,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:43,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:43,633 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:43,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-03 04:20:43,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:43,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:43,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash -212466461, now seen corresponding path program 1 times [2022-11-03 04:20:43,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:43,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034523362] [2022-11-03 04:20:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:43,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:43,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:43,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 04:20:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:45,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:45,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:45,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:45,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:45,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034523362] [2022-11-03 04:20:45,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034523362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:45,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:45,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:45,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853482886] [2022-11-03 04:20:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:45,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:45,909 INFO L87 Difference]: Start difference. First operand 661 states and 979 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:46,300 INFO L93 Difference]: Finished difference Result 1334 states and 1979 transitions. [2022-11-03 04:20:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:20:46,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:46,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:46,315 INFO L225 Difference]: With dead ends: 1334 [2022-11-03 04:20:46,315 INFO L226 Difference]: Without dead ends: 849 [2022-11-03 04:20:46,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:20:46,318 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 128 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:46,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 4310 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 18 Unchecked, 0.3s Time] [2022-11-03 04:20:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-03 04:20:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2022-11-03 04:20:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.4775943396226414) internal successors, (1253), 848 states have internal predecessors, (1253), 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 04:20:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1253 transitions. [2022-11-03 04:20:46,344 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1253 transitions. Word has length 488 [2022-11-03 04:20:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:46,344 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1253 transitions. [2022-11-03 04:20:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1253 transitions. [2022-11-03 04:20:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:46,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:46,350 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:46,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:46,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:46,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1968201375, now seen corresponding path program 1 times [2022-11-03 04:20:46,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683913849] [2022-11-03 04:20:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:46,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:46,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:46,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 04:20:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:48,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:48,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:48,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:48,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:48,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683913849] [2022-11-03 04:20:48,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683913849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:48,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:48,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:48,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668509870] [2022-11-03 04:20:48,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:48,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:48,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:48,379 INFO L87 Difference]: Start difference. First operand 849 states and 1253 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:48,963 INFO L93 Difference]: Finished difference Result 2460 states and 3656 transitions. [2022-11-03 04:20:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:20:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:48,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:48,970 INFO L225 Difference]: With dead ends: 2460 [2022-11-03 04:20:48,970 INFO L226 Difference]: Without dead ends: 1975 [2022-11-03 04:20:48,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:20:48,973 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 2630 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 4556 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:48,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 4556 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 21 Unchecked, 0.5s Time] [2022-11-03 04:20:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2022-11-03 04:20:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1111. [2022-11-03 04:20:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 1.4756756756756757) internal successors, (1638), 1110 states have internal predecessors, (1638), 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 04:20:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1638 transitions. [2022-11-03 04:20:49,012 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1638 transitions. Word has length 488 [2022-11-03 04:20:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:49,013 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1638 transitions. [2022-11-03 04:20:49,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1638 transitions. [2022-11-03 04:20:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:49,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:49,027 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:49,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:49,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:49,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1370839523, now seen corresponding path program 1 times [2022-11-03 04:20:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47835411] [2022-11-03 04:20:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:49,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:49,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:49,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:20:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:50,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:51,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:51,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:51,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47835411] [2022-11-03 04:20:51,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47835411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:51,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:51,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36907571] [2022-11-03 04:20:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:51,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:51,325 INFO L87 Difference]: Start difference. First operand 1111 states and 1638 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:51,703 INFO L93 Difference]: Finished difference Result 1962 states and 2897 transitions. [2022-11-03 04:20:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:20:51,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:51,710 INFO L225 Difference]: With dead ends: 1962 [2022-11-03 04:20:51,711 INFO L226 Difference]: Without dead ends: 1477 [2022-11-03 04:20:51,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:20:51,713 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 189 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:51,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 3759 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2022-11-03 04:20:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2022-11-03 04:20:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1477. [2022-11-03 04:20:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 1.4708672086720866) internal successors, (2171), 1476 states have internal predecessors, (2171), 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 04:20:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2171 transitions. [2022-11-03 04:20:51,749 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2171 transitions. Word has length 488 [2022-11-03 04:20:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:51,750 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 2171 transitions. [2022-11-03 04:20:51,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2171 transitions. [2022-11-03 04:20:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:51,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:51,757 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:51,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:51,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:51,977 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash -902795679, now seen corresponding path program 1 times [2022-11-03 04:20:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:51,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419394675] [2022-11-03 04:20:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:51,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:51,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:51,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:52,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 04:20:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:53,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:53,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:53,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:53,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:53,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419394675] [2022-11-03 04:20:53,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419394675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:53,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:53,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346687120] [2022-11-03 04:20:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:53,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:53,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:53,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:53,949 INFO L87 Difference]: Start difference. First operand 1477 states and 2171 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:54,426 INFO L93 Difference]: Finished difference Result 2626 states and 3882 transitions. [2022-11-03 04:20:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:20:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:54,434 INFO L225 Difference]: With dead ends: 2626 [2022-11-03 04:20:54,434 INFO L226 Difference]: Without dead ends: 2141 [2022-11-03 04:20:54,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:20:54,437 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 1030 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:54,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 4505 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 20 Unchecked, 0.4s Time] [2022-11-03 04:20:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2022-11-03 04:20:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 1657. [2022-11-03 04:20:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 1.4692028985507246) internal successors, (2433), 1656 states have internal predecessors, (2433), 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 04:20:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2433 transitions. [2022-11-03 04:20:54,471 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2433 transitions. Word has length 488 [2022-11-03 04:20:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:54,472 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2433 transitions. [2022-11-03 04:20:54,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2433 transitions. [2022-11-03 04:20:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:54,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:54,478 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:54,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-03 04:20:54,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:54,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:54,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:54,697 INFO L85 PathProgramCache]: Analyzing trace with hash -407661341, now seen corresponding path program 1 times [2022-11-03 04:20:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:54,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967026994] [2022-11-03 04:20:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:54,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:54,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:54,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:54,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 04:20:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:56,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:56,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:57,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:57,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:57,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967026994] [2022-11-03 04:20:57,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967026994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:57,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:57,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:57,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948138337] [2022-11-03 04:20:57,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:57,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:57,200 INFO L87 Difference]: Start difference. First operand 1657 states and 2433 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:57,636 INFO L93 Difference]: Finished difference Result 2444 states and 3604 transitions. [2022-11-03 04:20:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:20:57,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:20:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:57,644 INFO L225 Difference]: With dead ends: 2444 [2022-11-03 04:20:57,644 INFO L226 Difference]: Without dead ends: 1959 [2022-11-03 04:20:57,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:20:57,646 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 249 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 4308 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:57,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 4308 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.4s Time] [2022-11-03 04:20:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2022-11-03 04:20:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1959. [2022-11-03 04:20:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1958 states have (on average 1.4698672114402451) internal successors, (2878), 1958 states have internal predecessors, (2878), 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 04:20:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2878 transitions. [2022-11-03 04:20:57,684 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2878 transitions. Word has length 488 [2022-11-03 04:20:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:57,685 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2878 transitions. [2022-11-03 04:20:57,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:20:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2878 transitions. [2022-11-03 04:20:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:20:57,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:57,691 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:57,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:57,915 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash 960029921, now seen corresponding path program 1 times [2022-11-03 04:20:57,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:57,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812746929] [2022-11-03 04:20:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:57,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:57,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:57,920 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:57,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 04:20:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:59,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:20:59,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:59,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:59,919 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:59,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812746929] [2022-11-03 04:20:59,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812746929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:59,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:59,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:20:59,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785281602] [2022-11-03 04:20:59,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:59,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:20:59,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:20:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:20:59,922 INFO L87 Difference]: Start difference. First operand 1959 states and 2878 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:00,337 INFO L93 Difference]: Finished difference Result 2588 states and 3816 transitions. [2022-11-03 04:21:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:00,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:00,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:00,345 INFO L225 Difference]: With dead ends: 2588 [2022-11-03 04:21:00,345 INFO L226 Difference]: Without dead ends: 2103 [2022-11-03 04:21:00,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:00,347 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 340 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:00,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 4310 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 23 Unchecked, 0.4s Time] [2022-11-03 04:21:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2022-11-03 04:21:00,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2103. [2022-11-03 04:21:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 1.4700285442435777) internal successors, (3090), 2102 states have internal predecessors, (3090), 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 04:21:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3090 transitions. [2022-11-03 04:21:00,381 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3090 transitions. Word has length 488 [2022-11-03 04:21:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:00,381 INFO L495 AbstractCegarLoop]: Abstraction has 2103 states and 3090 transitions. [2022-11-03 04:21:00,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3090 transitions. [2022-11-03 04:21:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:00,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:00,388 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:00,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:00,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:00,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1603725663, now seen corresponding path program 1 times [2022-11-03 04:21:00,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:00,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785479799] [2022-11-03 04:21:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:00,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:00,621 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:00,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 04:21:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:01,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:01,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:02,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:02,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:02,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785479799] [2022-11-03 04:21:02,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785479799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:02,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:02,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:02,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365263773] [2022-11-03 04:21:02,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:02,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:02,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:02,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:02,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:02,467 INFO L87 Difference]: Start difference. First operand 2103 states and 3090 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:03,021 INFO L93 Difference]: Finished difference Result 3740 states and 5520 transitions. [2022-11-03 04:21:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:03,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:03,031 INFO L225 Difference]: With dead ends: 3740 [2022-11-03 04:21:03,032 INFO L226 Difference]: Without dead ends: 3255 [2022-11-03 04:21:03,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:03,034 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 2425 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2425 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:03,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2425 Valid, 4704 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 21 Unchecked, 0.5s Time] [2022-11-03 04:21:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2022-11-03 04:21:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 2473. [2022-11-03 04:21:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2472 states have (on average 1.4664239482200647) internal successors, (3625), 2472 states have internal predecessors, (3625), 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 04:21:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3625 transitions. [2022-11-03 04:21:03,097 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3625 transitions. Word has length 488 [2022-11-03 04:21:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:03,097 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 3625 transitions. [2022-11-03 04:21:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3625 transitions. [2022-11-03 04:21:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:03,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:03,106 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:03,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-03 04:21:03,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:03,322 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1422643615, now seen corresponding path program 1 times [2022-11-03 04:21:03,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:03,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643996580] [2022-11-03 04:21:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:03,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:03,327 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:03,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 04:21:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:04,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:04,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:05,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:05,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:05,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643996580] [2022-11-03 04:21:05,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643996580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:05,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:05,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:05,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611966360] [2022-11-03 04:21:05,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:05,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:05,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:05,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:05,018 INFO L87 Difference]: Start difference. First operand 2473 states and 3625 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:05,486 INFO L93 Difference]: Finished difference Result 4416 states and 6510 transitions. [2022-11-03 04:21:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:05,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:05,495 INFO L225 Difference]: With dead ends: 4416 [2022-11-03 04:21:05,495 INFO L226 Difference]: Without dead ends: 3931 [2022-11-03 04:21:05,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:05,497 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 2413 mSDsluCounter, 3812 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:05,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2413 Valid, 4812 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 19 Unchecked, 0.4s Time] [2022-11-03 04:21:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-11-03 04:21:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3153. [2022-11-03 04:21:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3152 states have (on average 1.4660532994923858) internal successors, (4621), 3152 states have internal predecessors, (4621), 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 04:21:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 4621 transitions. [2022-11-03 04:21:05,592 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 4621 transitions. Word has length 488 [2022-11-03 04:21:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:05,592 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 4621 transitions. [2022-11-03 04:21:05,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 4621 transitions. [2022-11-03 04:21:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:05,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:05,600 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:05,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:05,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:05,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash -558873501, now seen corresponding path program 1 times [2022-11-03 04:21:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418047320] [2022-11-03 04:21:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:05,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:05,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:05,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 04:21:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:07,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:07,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:07,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:07,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418047320] [2022-11-03 04:21:07,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418047320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:07,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:07,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476142454] [2022-11-03 04:21:07,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:07,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:07,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:07,684 INFO L87 Difference]: Start difference. First operand 3153 states and 4621 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:08,012 INFO L93 Difference]: Finished difference Result 3728 states and 5474 transitions. [2022-11-03 04:21:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:08,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:08,024 INFO L225 Difference]: With dead ends: 3728 [2022-11-03 04:21:08,025 INFO L226 Difference]: Without dead ends: 3243 [2022-11-03 04:21:08,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:08,027 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 376 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:08,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 3883 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 20 Unchecked, 0.3s Time] [2022-11-03 04:21:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2022-11-03 04:21:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3243. [2022-11-03 04:21:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3242 states have (on average 1.4645280690931524) internal successors, (4748), 3242 states have internal predecessors, (4748), 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 04:21:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4748 transitions. [2022-11-03 04:21:08,071 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4748 transitions. Word has length 488 [2022-11-03 04:21:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:08,072 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 4748 transitions. [2022-11-03 04:21:08,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4748 transitions. [2022-11-03 04:21:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:08,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:08,079 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:08,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:08,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:08,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash -251327391, now seen corresponding path program 1 times [2022-11-03 04:21:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:08,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768914612] [2022-11-03 04:21:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:08,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:08,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:08,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:08,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 04:21:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:09,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:09,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:10,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:10,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:10,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768914612] [2022-11-03 04:21:10,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768914612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:10,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:10,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845974207] [2022-11-03 04:21:10,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:10,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:10,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:10,381 INFO L87 Difference]: Start difference. First operand 3243 states and 4748 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:10,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:10,703 INFO L93 Difference]: Finished difference Result 4702 states and 6895 transitions. [2022-11-03 04:21:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:10,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:10,711 INFO L225 Difference]: With dead ends: 4702 [2022-11-03 04:21:10,711 INFO L226 Difference]: Without dead ends: 4217 [2022-11-03 04:21:10,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:10,713 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 370 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:10,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 4311 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 25 Unchecked, 0.3s Time] [2022-11-03 04:21:10,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2022-11-03 04:21:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 4217. [2022-11-03 04:21:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4217 states, 4216 states have (on average 1.463235294117647) internal successors, (6169), 4216 states have internal predecessors, (6169), 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 04:21:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4217 states to 4217 states and 6169 transitions. [2022-11-03 04:21:10,767 INFO L78 Accepts]: Start accepts. Automaton has 4217 states and 6169 transitions. Word has length 488 [2022-11-03 04:21:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:10,768 INFO L495 AbstractCegarLoop]: Abstraction has 4217 states and 6169 transitions. [2022-11-03 04:21:10,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4217 states and 6169 transitions. [2022-11-03 04:21:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:10,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:10,778 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:10,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:10,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:10,992 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:10,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash -467367713, now seen corresponding path program 1 times [2022-11-03 04:21:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:11,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855980613] [2022-11-03 04:21:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:11,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:11,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:11,010 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:11,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 04:21:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:12,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:12,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:12,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:12,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:12,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855980613] [2022-11-03 04:21:12,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855980613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:12,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:12,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524973608] [2022-11-03 04:21:12,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:12,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:12,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:12,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:12,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:12,797 INFO L87 Difference]: Start difference. First operand 4217 states and 6169 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:13,294 INFO L93 Difference]: Finished difference Result 7022 states and 10291 transitions. [2022-11-03 04:21:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:13,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:13,304 INFO L225 Difference]: With dead ends: 7022 [2022-11-03 04:21:13,304 INFO L226 Difference]: Without dead ends: 6537 [2022-11-03 04:21:13,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:13,307 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 1890 mSDsluCounter, 5303 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 6360 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:13,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 6360 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 33 Unchecked, 0.4s Time] [2022-11-03 04:21:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6537 states. [2022-11-03 04:21:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6537 to 5797. [2022-11-03 04:21:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5797 states, 5796 states have (on average 1.4594547964113183) internal successors, (8459), 5796 states have internal predecessors, (8459), 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 04:21:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 8459 transitions. [2022-11-03 04:21:13,383 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 8459 transitions. Word has length 488 [2022-11-03 04:21:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:13,384 INFO L495 AbstractCegarLoop]: Abstraction has 5797 states and 8459 transitions. [2022-11-03 04:21:13,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:13,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 8459 transitions. [2022-11-03 04:21:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:13,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:13,393 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:13,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:13,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:13,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1697665121, now seen corresponding path program 1 times [2022-11-03 04:21:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:13,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120479529] [2022-11-03 04:21:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:13,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:13,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:13,629 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:13,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 04:21:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:14,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:14,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:15,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:15,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:15,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120479529] [2022-11-03 04:21:15,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120479529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:15,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:15,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:15,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969985710] [2022-11-03 04:21:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:15,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:15,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:15,417 INFO L87 Difference]: Start difference. First operand 5797 states and 8459 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:15,785 INFO L93 Difference]: Finished difference Result 11378 states and 16618 transitions. [2022-11-03 04:21:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:15,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:15,799 INFO L225 Difference]: With dead ends: 11378 [2022-11-03 04:21:15,799 INFO L226 Difference]: Without dead ends: 10893 [2022-11-03 04:21:15,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:15,802 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 1192 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:15,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 4910 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 20 Unchecked, 0.3s Time] [2022-11-03 04:21:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10893 states. [2022-11-03 04:21:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10893 to 10409. [2022-11-03 04:21:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10409 states, 10408 states have (on average 1.4574365872405841) internal successors, (15169), 10408 states have internal predecessors, (15169), 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 04:21:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10409 states to 10409 states and 15169 transitions. [2022-11-03 04:21:15,919 INFO L78 Accepts]: Start accepts. Automaton has 10409 states and 15169 transitions. Word has length 488 [2022-11-03 04:21:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:15,920 INFO L495 AbstractCegarLoop]: Abstraction has 10409 states and 15169 transitions. [2022-11-03 04:21:15,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 10409 states and 15169 transitions. [2022-11-03 04:21:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:15,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:15,935 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:15,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:16,160 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:16,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1813629667, now seen corresponding path program 1 times [2022-11-03 04:21:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:16,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709659511] [2022-11-03 04:21:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:16,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:16,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:16,173 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:16,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 04:21:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:17,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:17,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:18,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:18,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709659511] [2022-11-03 04:21:18,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709659511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:18,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:18,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392913904] [2022-11-03 04:21:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:18,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:18,044 INFO L87 Difference]: Start difference. First operand 10409 states and 15169 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:18,277 INFO L93 Difference]: Finished difference Result 10970 states and 16007 transitions. [2022-11-03 04:21:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:18,292 INFO L225 Difference]: With dead ends: 10970 [2022-11-03 04:21:18,292 INFO L226 Difference]: Without dead ends: 10485 [2022-11-03 04:21:18,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:18,296 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 478 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:18,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 3577 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-11-03 04:21:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2022-11-03 04:21:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 10485. [2022-11-03 04:21:18,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10485 states, 10484 states have (on average 1.4575543685616177) internal successors, (15281), 10484 states have internal predecessors, (15281), 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 04:21:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10485 states to 10485 states and 15281 transitions. [2022-11-03 04:21:18,405 INFO L78 Accepts]: Start accepts. Automaton has 10485 states and 15281 transitions. Word has length 488 [2022-11-03 04:21:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:18,405 INFO L495 AbstractCegarLoop]: Abstraction has 10485 states and 15281 transitions. [2022-11-03 04:21:18,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 10485 states and 15281 transitions. [2022-11-03 04:21:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:18,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:18,419 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:18,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:18,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:18,635 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash -807747743, now seen corresponding path program 1 times [2022-11-03 04:21:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:18,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771649490] [2022-11-03 04:21:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:18,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:18,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:18,651 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:18,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 04:21:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:20,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:20,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:20,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:20,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:20,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771649490] [2022-11-03 04:21:20,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771649490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:20,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:20,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167902313] [2022-11-03 04:21:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:20,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:20,727 INFO L87 Difference]: Start difference. First operand 10485 states and 15281 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:21,043 INFO L93 Difference]: Finished difference Result 11000 states and 16051 transitions. [2022-11-03 04:21:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:21,054 INFO L225 Difference]: With dead ends: 11000 [2022-11-03 04:21:21,054 INFO L226 Difference]: Without dead ends: 10515 [2022-11-03 04:21:21,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:21,058 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 507 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:21,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 4311 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 20 Unchecked, 0.3s Time] [2022-11-03 04:21:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-11-03 04:21:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 10515. [2022-11-03 04:21:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10515 states, 10514 states have (on average 1.4575803690317672) internal successors, (15325), 10514 states have internal predecessors, (15325), 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 04:21:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 15325 transitions. [2022-11-03 04:21:21,173 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 15325 transitions. Word has length 488 [2022-11-03 04:21:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:21,174 INFO L495 AbstractCegarLoop]: Abstraction has 10515 states and 15325 transitions. [2022-11-03 04:21:21,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 15325 transitions. [2022-11-03 04:21:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:21,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:21,189 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:21,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:21,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:21,404 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:21,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash -143755425, now seen corresponding path program 1 times [2022-11-03 04:21:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:21,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676280636] [2022-11-03 04:21:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:21,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:21,419 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:21,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 04:21:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:22,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:23,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:23,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:23,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676280636] [2022-11-03 04:21:23,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676280636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:23,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:23,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958379933] [2022-11-03 04:21:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:23,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:23,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:23,222 INFO L87 Difference]: Start difference. First operand 10515 states and 15325 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:23,661 INFO L93 Difference]: Finished difference Result 12220 states and 17842 transitions. [2022-11-03 04:21:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:23,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:23,670 INFO L225 Difference]: With dead ends: 12220 [2022-11-03 04:21:23,671 INFO L226 Difference]: Without dead ends: 11735 [2022-11-03 04:21:23,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:23,674 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 1807 mSDsluCounter, 5122 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 6245 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:23,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 6245 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 22 Unchecked, 0.4s Time] [2022-11-03 04:21:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11735 states. [2022-11-03 04:21:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11735 to 11039. [2022-11-03 04:21:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11039 states, 11038 states have (on average 1.4564232650842543) internal successors, (16076), 11038 states have internal predecessors, (16076), 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 04:21:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11039 states to 11039 states and 16076 transitions. [2022-11-03 04:21:23,787 INFO L78 Accepts]: Start accepts. Automaton has 11039 states and 16076 transitions. Word has length 488 [2022-11-03 04:21:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:23,788 INFO L495 AbstractCegarLoop]: Abstraction has 11039 states and 16076 transitions. [2022-11-03 04:21:23,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 11039 states and 16076 transitions. [2022-11-03 04:21:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:23,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:23,801 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:23,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:24,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:24,023 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:24,024 INFO L85 PathProgramCache]: Analyzing trace with hash -145589791, now seen corresponding path program 1 times [2022-11-03 04:21:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:24,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157017657] [2022-11-03 04:21:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:24,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:24,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:24,032 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:24,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 04:21:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:25,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:25,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:26,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:26,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:26,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157017657] [2022-11-03 04:21:26,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157017657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:26,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:26,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114717228] [2022-11-03 04:21:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:26,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:26,377 INFO L87 Difference]: Start difference. First operand 11039 states and 16076 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:26,705 INFO L93 Difference]: Finished difference Result 20064 states and 29222 transitions. [2022-11-03 04:21:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:26,717 INFO L225 Difference]: With dead ends: 20064 [2022-11-03 04:21:26,717 INFO L226 Difference]: Without dead ends: 19579 [2022-11-03 04:21:26,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:26,722 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 457 mSDsluCounter, 3587 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:26,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 4307 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 21 Unchecked, 0.3s Time] [2022-11-03 04:21:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19579 states. [2022-11-03 04:21:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19579 to 19579. [2022-11-03 04:21:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19579 states, 19578 states have (on average 1.455511288180611) internal successors, (28496), 19578 states have internal predecessors, (28496), 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 04:21:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19579 states to 19579 states and 28496 transitions. [2022-11-03 04:21:26,919 INFO L78 Accepts]: Start accepts. Automaton has 19579 states and 28496 transitions. Word has length 488 [2022-11-03 04:21:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:26,919 INFO L495 AbstractCegarLoop]: Abstraction has 19579 states and 28496 transitions. [2022-11-03 04:21:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 19579 states and 28496 transitions. [2022-11-03 04:21:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:26,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:26,940 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:26,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:27,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:27,168 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash -275454369, now seen corresponding path program 1 times [2022-11-03 04:21:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:27,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001175958] [2022-11-03 04:21:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:27,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:27,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:27,171 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:27,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 04:21:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:28,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:28,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:29,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:29,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:29,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001175958] [2022-11-03 04:21:29,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001175958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:29,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:29,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200982224] [2022-11-03 04:21:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:29,246 INFO L87 Difference]: Start difference. First operand 19579 states and 28496 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:29,603 INFO L93 Difference]: Finished difference Result 20682 states and 30121 transitions. [2022-11-03 04:21:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:29,620 INFO L225 Difference]: With dead ends: 20682 [2022-11-03 04:21:29,620 INFO L226 Difference]: Without dead ends: 20197 [2022-11-03 04:21:29,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:29,624 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 539 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:29,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 4311 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 25 Unchecked, 0.3s Time] [2022-11-03 04:21:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20197 states. [2022-11-03 04:21:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20197 to 20197. [2022-11-03 04:21:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20197 states, 20196 states have (on average 1.4554862348979996) internal successors, (29395), 20196 states have internal predecessors, (29395), 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 04:21:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20197 states to 20197 states and 29395 transitions. [2022-11-03 04:21:29,925 INFO L78 Accepts]: Start accepts. Automaton has 20197 states and 29395 transitions. Word has length 488 [2022-11-03 04:21:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:29,926 INFO L495 AbstractCegarLoop]: Abstraction has 20197 states and 29395 transitions. [2022-11-03 04:21:29,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 20197 states and 29395 transitions. [2022-11-03 04:21:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:29,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:29,957 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:29,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:30,180 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:30,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:30,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1805129309, now seen corresponding path program 1 times [2022-11-03 04:21:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:30,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44523599] [2022-11-03 04:21:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:30,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:30,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:30,197 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:30,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 04:21:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:31,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:31,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:32,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:32,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:32,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44523599] [2022-11-03 04:21:32,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44523599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:32,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:32,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194330546] [2022-11-03 04:21:32,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:32,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:32,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:32,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:32,073 INFO L87 Difference]: Start difference. First operand 20197 states and 29395 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:32,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:32,585 INFO L93 Difference]: Finished difference Result 22144 states and 32270 transitions. [2022-11-03 04:21:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:32,597 INFO L225 Difference]: With dead ends: 22144 [2022-11-03 04:21:32,597 INFO L226 Difference]: Without dead ends: 21659 [2022-11-03 04:21:32,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:32,602 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 1775 mSDsluCounter, 5529 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 6700 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:32,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 6700 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 36 Unchecked, 0.4s Time] [2022-11-03 04:21:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21659 states. [2022-11-03 04:21:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21659 to 20995. [2022-11-03 04:21:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20995 states, 20994 states have (on average 1.4552729351243212) internal successors, (30552), 20994 states have internal predecessors, (30552), 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 04:21:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20995 states to 20995 states and 30552 transitions. [2022-11-03 04:21:32,775 INFO L78 Accepts]: Start accepts. Automaton has 20995 states and 30552 transitions. Word has length 488 [2022-11-03 04:21:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:32,776 INFO L495 AbstractCegarLoop]: Abstraction has 20995 states and 30552 transitions. [2022-11-03 04:21:32,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 20995 states and 30552 transitions. [2022-11-03 04:21:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:32,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:32,851 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:32,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:33,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:33,064 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:33,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1332305697, now seen corresponding path program 1 times [2022-11-03 04:21:33,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:33,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360048345] [2022-11-03 04:21:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:33,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:33,080 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:33,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 04:21:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:34,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:34,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:34,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:34,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360048345] [2022-11-03 04:21:34,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360048345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:34,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:34,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166950205] [2022-11-03 04:21:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:34,964 INFO L87 Difference]: Start difference. First operand 20995 states and 30552 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:35,427 INFO L93 Difference]: Finished difference Result 23676 states and 34488 transitions. [2022-11-03 04:21:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:35,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:35,439 INFO L225 Difference]: With dead ends: 23676 [2022-11-03 04:21:35,439 INFO L226 Difference]: Without dead ends: 23191 [2022-11-03 04:21:35,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:35,444 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 2125 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:35,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 4873 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 22 Unchecked, 0.4s Time] [2022-11-03 04:21:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23191 states. [2022-11-03 04:21:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23191 to 22529. [2022-11-03 04:21:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22529 states, 22528 states have (on average 1.4547674005681819) internal successors, (32773), 22528 states have internal predecessors, (32773), 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 04:21:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22529 states to 22529 states and 32773 transitions. [2022-11-03 04:21:35,618 INFO L78 Accepts]: Start accepts. Automaton has 22529 states and 32773 transitions. Word has length 488 [2022-11-03 04:21:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:35,618 INFO L495 AbstractCegarLoop]: Abstraction has 22529 states and 32773 transitions. [2022-11-03 04:21:35,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 22529 states and 32773 transitions. [2022-11-03 04:21:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:35,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:35,701 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:35,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:35,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:35,903 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash 425321441, now seen corresponding path program 1 times [2022-11-03 04:21:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694815841] [2022-11-03 04:21:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:35,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:35,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:35,929 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:35,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 04:21:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:37,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:37,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:37,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:37,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:37,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694815841] [2022-11-03 04:21:37,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694815841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:37,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:37,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239563506] [2022-11-03 04:21:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:37,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:37,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:37,892 INFO L87 Difference]: Start difference. First operand 22529 states and 32773 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:38,364 INFO L93 Difference]: Finished difference Result 23736 states and 34577 transitions. [2022-11-03 04:21:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:38,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:38,379 INFO L225 Difference]: With dead ends: 23736 [2022-11-03 04:21:38,379 INFO L226 Difference]: Without dead ends: 23251 [2022-11-03 04:21:38,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:38,384 INFO L413 NwaCegarLoop]: 1189 mSDtfsCounter, 2100 mSDsluCounter, 3598 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 4787 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:38,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 4787 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 21 Unchecked, 0.4s Time] [2022-11-03 04:21:38,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23251 states. [2022-11-03 04:21:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23251 to 22599. [2022-11-03 04:21:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22599 states, 22598 states have (on average 1.4548632622355961) internal successors, (32877), 22598 states have internal predecessors, (32877), 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 04:21:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22599 states to 22599 states and 32877 transitions. [2022-11-03 04:21:38,646 INFO L78 Accepts]: Start accepts. Automaton has 22599 states and 32877 transitions. Word has length 488 [2022-11-03 04:21:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:38,646 INFO L495 AbstractCegarLoop]: Abstraction has 22599 states and 32877 transitions. [2022-11-03 04:21:38,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 22599 states and 32877 transitions. [2022-11-03 04:21:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:38,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:38,671 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:38,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:38,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:38,888 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1073914211, now seen corresponding path program 1 times [2022-11-03 04:21:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:38,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104162320] [2022-11-03 04:21:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:38,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:38,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:38,908 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:38,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 04:21:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:40,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:40,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:41,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:41,126 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:41,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104162320] [2022-11-03 04:21:41,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104162320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:41,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:41,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965855039] [2022-11-03 04:21:41,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:41,128 INFO L87 Difference]: Start difference. First operand 22599 states and 32877 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:41,435 INFO L93 Difference]: Finished difference Result 30756 states and 44630 transitions. [2022-11-03 04:21:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:41,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:41,452 INFO L225 Difference]: With dead ends: 30756 [2022-11-03 04:21:41,452 INFO L226 Difference]: Without dead ends: 30271 [2022-11-03 04:21:41,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:41,459 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 564 mSDsluCounter, 3587 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:41,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 4307 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-03 04:21:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30271 states. [2022-11-03 04:21:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30271 to 30271. [2022-11-03 04:21:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30271 states, 30270 states have (on average 1.450412950115626) internal successors, (43904), 30270 states have internal predecessors, (43904), 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 04:21:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30271 states to 30271 states and 43904 transitions. [2022-11-03 04:21:41,828 INFO L78 Accepts]: Start accepts. Automaton has 30271 states and 43904 transitions. Word has length 488 [2022-11-03 04:21:41,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:41,828 INFO L495 AbstractCegarLoop]: Abstraction has 30271 states and 43904 transitions. [2022-11-03 04:21:41,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 30271 states and 43904 transitions. [2022-11-03 04:21:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:41,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:41,864 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:41,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-03 04:21:42,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:42,066 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:42,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash -329954975, now seen corresponding path program 1 times [2022-11-03 04:21:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:42,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396873118] [2022-11-03 04:21:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:42,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:42,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:42,083 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:42,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 04:21:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:43,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:43,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:44,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:44,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:44,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396873118] [2022-11-03 04:21:44,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396873118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:44,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:44,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80247178] [2022-11-03 04:21:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:44,047 INFO L87 Difference]: Start difference. First operand 30271 states and 43904 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:44,495 INFO L93 Difference]: Finished difference Result 31418 states and 45617 transitions. [2022-11-03 04:21:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:44,512 INFO L225 Difference]: With dead ends: 31418 [2022-11-03 04:21:44,512 INFO L226 Difference]: Without dead ends: 30933 [2022-11-03 04:21:44,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:44,518 INFO L413 NwaCegarLoop]: 1207 mSDtfsCounter, 1826 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:44,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 6285 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 34 Unchecked, 0.4s Time] [2022-11-03 04:21:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30933 states. [2022-11-03 04:21:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30933 to 30293. [2022-11-03 04:21:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30293 states, 30292 states have (on average 1.450382939389938) internal successors, (43935), 30292 states have internal predecessors, (43935), 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 04:21:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30293 states to 30293 states and 43935 transitions. [2022-11-03 04:21:44,824 INFO L78 Accepts]: Start accepts. Automaton has 30293 states and 43935 transitions. Word has length 488 [2022-11-03 04:21:44,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:44,825 INFO L495 AbstractCegarLoop]: Abstraction has 30293 states and 43935 transitions. [2022-11-03 04:21:44,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 30293 states and 43935 transitions. [2022-11-03 04:21:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:44,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:44,848 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:44,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:45,064 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:45,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 337426915, now seen corresponding path program 1 times [2022-11-03 04:21:45,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:45,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687426196] [2022-11-03 04:21:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:45,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:45,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:45,077 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:45,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 04:21:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:46,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:46,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:47,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:47,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687426196] [2022-11-03 04:21:47,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687426196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:47,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:47,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950636790] [2022-11-03 04:21:47,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:47,330 INFO L87 Difference]: Start difference. First operand 30293 states and 43935 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:47,787 INFO L93 Difference]: Finished difference Result 40526 states and 58703 transitions. [2022-11-03 04:21:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:47,807 INFO L225 Difference]: With dead ends: 40526 [2022-11-03 04:21:47,807 INFO L226 Difference]: Without dead ends: 40041 [2022-11-03 04:21:47,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:47,811 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 669 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:47,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 3652 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 04:21:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40041 states. [2022-11-03 04:21:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40041 to 40041. [2022-11-03 04:21:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40041 states, 40040 states have (on average 1.447977022977023) internal successors, (57977), 40040 states have internal predecessors, (57977), 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 04:21:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40041 states to 40041 states and 57977 transitions. [2022-11-03 04:21:48,072 INFO L78 Accepts]: Start accepts. Automaton has 40041 states and 57977 transitions. Word has length 488 [2022-11-03 04:21:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:48,072 INFO L495 AbstractCegarLoop]: Abstraction has 40041 states and 57977 transitions. [2022-11-03 04:21:48,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 40041 states and 57977 transitions. [2022-11-03 04:21:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:48,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:48,100 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:48,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:48,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:48,302 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:48,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1593698719, now seen corresponding path program 1 times [2022-11-03 04:21:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821558988] [2022-11-03 04:21:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:48,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:48,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:48,315 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:48,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 04:21:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:49,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:49,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:50,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:50,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:50,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821558988] [2022-11-03 04:21:50,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821558988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:50,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:50,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249431608] [2022-11-03 04:21:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:50,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:50,453 INFO L87 Difference]: Start difference. First operand 40041 states and 57977 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:50,828 INFO L93 Difference]: Finished difference Result 40578 states and 58779 transitions. [2022-11-03 04:21:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:50,851 INFO L225 Difference]: With dead ends: 40578 [2022-11-03 04:21:50,851 INFO L226 Difference]: Without dead ends: 40093 [2022-11-03 04:21:50,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:50,860 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 705 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 3904 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:50,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 3904 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 04:21:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40093 states. [2022-11-03 04:21:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40093 to 40093. [2022-11-03 04:21:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40093 states, 40092 states have (on average 1.4479946123914995) internal successors, (58053), 40092 states have internal predecessors, (58053), 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 04:21:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40093 states to 40093 states and 58053 transitions. [2022-11-03 04:21:51,141 INFO L78 Accepts]: Start accepts. Automaton has 40093 states and 58053 transitions. Word has length 488 [2022-11-03 04:21:51,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:51,141 INFO L495 AbstractCegarLoop]: Abstraction has 40093 states and 58053 transitions. [2022-11-03 04:21:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 40093 states and 58053 transitions. [2022-11-03 04:21:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:51,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:51,169 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:51,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:51,371 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:51,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash -645646753, now seen corresponding path program 1 times [2022-11-03 04:21:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:51,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487755731] [2022-11-03 04:21:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:51,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:51,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:51,384 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:51,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 04:21:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:52,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:52,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:53,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:53,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487755731] [2022-11-03 04:21:53,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487755731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:53,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:53,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:53,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080320211] [2022-11-03 04:21:53,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:53,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:53,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:53,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:53,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:53,610 INFO L87 Difference]: Start difference. First operand 40093 states and 58053 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:54,115 INFO L93 Difference]: Finished difference Result 41412 states and 60012 transitions. [2022-11-03 04:21:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:54,142 INFO L225 Difference]: With dead ends: 41412 [2022-11-03 04:21:54,142 INFO L226 Difference]: Without dead ends: 40927 [2022-11-03 04:21:54,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:54,152 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 1983 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 5040 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:54,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 5040 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 18 Unchecked, 0.4s Time] [2022-11-03 04:21:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40927 states. [2022-11-03 04:21:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40927 to 40321. [2022-11-03 04:21:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40321 states, 40320 states have (on average 1.4479414682539682) internal successors, (58381), 40320 states have internal predecessors, (58381), 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 04:21:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 58381 transitions. [2022-11-03 04:21:54,463 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 58381 transitions. Word has length 488 [2022-11-03 04:21:54,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:54,463 INFO L495 AbstractCegarLoop]: Abstraction has 40321 states and 58381 transitions. [2022-11-03 04:21:54,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 58381 transitions. [2022-11-03 04:21:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:54,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:54,491 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:54,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:54,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:54,694 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:54,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1352243359, now seen corresponding path program 1 times [2022-11-03 04:21:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:54,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948899780] [2022-11-03 04:21:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:54,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:54,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:54,707 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:54,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 04:21:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:55,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:55,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:57,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:57,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:57,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948899780] [2022-11-03 04:21:57,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948899780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:57,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:57,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093369187] [2022-11-03 04:21:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:57,363 INFO L87 Difference]: Start difference. First operand 40321 states and 58381 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:57,743 INFO L93 Difference]: Finished difference Result 79784 states and 115502 transitions. [2022-11-03 04:21:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:57,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:21:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:57,796 INFO L225 Difference]: With dead ends: 79784 [2022-11-03 04:21:57,796 INFO L226 Difference]: Without dead ends: 79299 [2022-11-03 04:21:57,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:57,811 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 732 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:57,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 3525 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 04:21:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79299 states. [2022-11-03 04:21:58,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79299 to 79299. [2022-11-03 04:21:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79299 states, 79298 states have (on average 1.4474009432772579) internal successors, (114776), 79298 states have internal predecessors, (114776), 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 04:21:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79299 states to 79299 states and 114776 transitions. [2022-11-03 04:21:58,726 INFO L78 Accepts]: Start accepts. Automaton has 79299 states and 114776 transitions. Word has length 488 [2022-11-03 04:21:58,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:58,727 INFO L495 AbstractCegarLoop]: Abstraction has 79299 states and 114776 transitions. [2022-11-03 04:21:58,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:21:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 79299 states and 114776 transitions. [2022-11-03 04:21:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:21:58,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:58,787 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:58,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:58,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:58,989 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1013791711, now seen corresponding path program 1 times [2022-11-03 04:21:59,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:59,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640343300] [2022-11-03 04:21:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:59,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:59,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:59,255 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:59,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 04:22:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:00,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:22:00,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:22:01,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:22:01,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:22:01,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640343300] [2022-11-03 04:22:01,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640343300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:22:01,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:22:01,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:22:01,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036314379] [2022-11-03 04:22:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:22:01,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:22:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:22:01,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:22:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:22:01,595 INFO L87 Difference]: Start difference. First operand 79299 states and 114776 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:22:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:02,254 INFO L93 Difference]: Finished difference Result 80672 states and 116814 transitions. [2022-11-03 04:22:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:22:02,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:22:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:02,297 INFO L225 Difference]: With dead ends: 80672 [2022-11-03 04:22:02,297 INFO L226 Difference]: Without dead ends: 80187 [2022-11-03 04:22:02,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:22:02,309 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1916 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 4998 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:02,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 4998 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 20 Unchecked, 0.4s Time] [2022-11-03 04:22:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80187 states. [2022-11-03 04:22:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80187 to 79607. [2022-11-03 04:22:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79607 states, 79606 states have (on average 1.447403462050599) internal successors, (115222), 79606 states have internal predecessors, (115222), 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 04:22:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79607 states to 79607 states and 115222 transitions. [2022-11-03 04:22:03,028 INFO L78 Accepts]: Start accepts. Automaton has 79607 states and 115222 transitions. Word has length 488 [2022-11-03 04:22:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:03,029 INFO L495 AbstractCegarLoop]: Abstraction has 79607 states and 115222 transitions. [2022-11-03 04:22:03,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:22:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 79607 states and 115222 transitions. [2022-11-03 04:22:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:22:03,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:03,083 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:03,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 04:22:03,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:22:03,288 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2044832609, now seen corresponding path program 1 times [2022-11-03 04:22:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:22:03,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689535661] [2022-11-03 04:22:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:03,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:22:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:22:03,301 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:22:03,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 04:22:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:04,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:22:04,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:22:05,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:22:05,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:22:05,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689535661] [2022-11-03 04:22:05,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689535661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:22:05,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:22:05,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:22:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247280005] [2022-11-03 04:22:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:22:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:22:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:22:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:22:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:22:05,931 INFO L87 Difference]: Start difference. First operand 79607 states and 115222 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:22:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:06,459 INFO L93 Difference]: Finished difference Result 80998 states and 117251 transitions. [2022-11-03 04:22:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:22:06,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:22:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:06,502 INFO L225 Difference]: With dead ends: 80998 [2022-11-03 04:22:06,502 INFO L226 Difference]: Without dead ends: 80513 [2022-11-03 04:22:06,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:22:06,514 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 768 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:06,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 3918 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 04:22:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80513 states. [2022-11-03 04:22:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80513 to 80513. [2022-11-03 04:22:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80513 states, 80512 states have (on average 1.447299781399046) internal successors, (116525), 80512 states have internal predecessors, (116525), 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 04:22:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80513 states to 80513 states and 116525 transitions. [2022-11-03 04:22:07,314 INFO L78 Accepts]: Start accepts. Automaton has 80513 states and 116525 transitions. Word has length 488 [2022-11-03 04:22:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:07,314 INFO L495 AbstractCegarLoop]: Abstraction has 80513 states and 116525 transitions. [2022-11-03 04:22:07,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:22:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 80513 states and 116525 transitions. [2022-11-03 04:22:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:22:07,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:07,369 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:07,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 04:22:07,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:22:07,571 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash 443761503, now seen corresponding path program 1 times [2022-11-03 04:22:07,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:22:07,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639222240] [2022-11-03 04:22:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:07,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:22:07,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:22:07,782 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:22:07,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 04:22:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:09,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:22:09,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:22:09,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:22:09,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:22:09,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639222240] [2022-11-03 04:22:09,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639222240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:22:09,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:22:09,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:22:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379572509] [2022-11-03 04:22:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:22:09,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:22:09,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:22:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:22:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:22:09,771 INFO L87 Difference]: Start difference. First operand 80513 states and 116525 transitions. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:22:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:10,596 INFO L93 Difference]: Finished difference Result 161532 states and 233816 transitions. [2022-11-03 04:22:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:22:10,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 488 [2022-11-03 04:22:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:10,686 INFO L225 Difference]: With dead ends: 161532 [2022-11-03 04:22:10,686 INFO L226 Difference]: Without dead ends: 161047 [2022-11-03 04:22:10,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:22:10,713 INFO L413 NwaCegarLoop]: 1306 mSDtfsCounter, 1901 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 6055 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:10,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 6055 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 34 Unchecked, 0.5s Time] [2022-11-03 04:22:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161047 states. [2022-11-03 04:22:12,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161047 to 160473. [2022-11-03 04:22:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160473 states, 160472 states have (on average 1.447187048207787) internal successors, (232233), 160472 states have internal predecessors, (232233), 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 04:22:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160473 states to 160473 states and 232233 transitions. [2022-11-03 04:22:13,128 INFO L78 Accepts]: Start accepts. Automaton has 160473 states and 232233 transitions. Word has length 488 [2022-11-03 04:22:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:13,128 INFO L495 AbstractCegarLoop]: Abstraction has 160473 states and 232233 transitions. [2022-11-03 04:22:13,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 04:22:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 160473 states and 232233 transitions. [2022-11-03 04:22:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 04:22:13,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:13,284 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:13,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 04:22:13,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:22:13,500 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:13,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash -439747487, now seen corresponding path program 1 times [2022-11-03 04:22:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:22:13,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471655049] [2022-11-03 04:22:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:13,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:22:13,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:22:13,516 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:22:13,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1a37ad-9b37-4a45-863a-d851fa51a045/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process