./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17ff5ae56efea2deac29e7fa779d53a24810a7c7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17ff5ae56efea2deac29e7fa779d53a24810a7c7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:37:13,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:37:13,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:37:13,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:37:13,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:37:13,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:37:13,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:37:13,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:37:13,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:37:13,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:37:13,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:37:13,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:37:13,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:37:13,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:37:13,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:37:13,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:37:13,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:37:13,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:37:13,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:37:13,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:37:13,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:37:13,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:37:13,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:37:13,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:37:13,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:37:13,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:37:13,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:37:13,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:37:13,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:37:13,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:37:13,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:37:13,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:37:13,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:37:13,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:37:13,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:37:13,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:37:13,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:37:13,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:37:13,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:37:13,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:37:13,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:37:13,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 18:37:13,636 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:37:13,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:37:13,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:37:13,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:37:13,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 18:37:13,638 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 18:37:13,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:37:13,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 18:37:13,639 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:37:13,639 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:37:13,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:37:13,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:37:13,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:37:13,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:37:13,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:37:13,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:37:13,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:37:13,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:37:13,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:37:13,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:37:13,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17ff5ae56efea2deac29e7fa779d53a24810a7c7 [2019-12-07 18:37:13,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:37:13,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:37:13,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:37:13,747 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:37:13,748 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:37:13,748 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-2.i [2019-12-07 18:37:13,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/594bed212/f00b915e627e4cc59e5c14f958e7f285/FLAGddcf4a0ad [2019-12-07 18:37:14,160 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:37:14,161 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/sv-benchmarks/c/list-properties/simple-2.i [2019-12-07 18:37:14,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/594bed212/f00b915e627e4cc59e5c14f958e7f285/FLAGddcf4a0ad [2019-12-07 18:37:14,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/594bed212/f00b915e627e4cc59e5c14f958e7f285 [2019-12-07 18:37:14,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:37:14,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 18:37:14,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:14,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:37:14,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:37:14,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2291f649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14, skipping insertion in model container [2019-12-07 18:37:14,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:37:14,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:37:14,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:14,440 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:37:14,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:14,495 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:37:14,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14 WrapperNode [2019-12-07 18:37:14,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:14,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:37:14,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:37:14,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:37:14,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... [2019-12-07 18:37:14,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:37:14,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:37:14,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:37:14,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:37:14,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:37:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-12-07 18:37:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 18:37:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 18:37:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 18:37:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 18:37:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 18:37:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 18:37:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 18:37:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 18:37:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 18:37:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 18:37:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 18:37:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:37:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 18:37:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 18:37:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:37:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 18:37:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:37:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:37:14,755 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-12-07 18:37:14,845 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:37:14,845 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 18:37:14,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:14 BoogieIcfgContainer [2019-12-07 18:37:14,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:37:14,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:37:14,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:37:14,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:37:14,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:37:14" (1/3) ... [2019-12-07 18:37:14,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5aed01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:14, skipping insertion in model container [2019-12-07 18:37:14,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:14" (2/3) ... [2019-12-07 18:37:14,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5aed01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:14, skipping insertion in model container [2019-12-07 18:37:14,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:14" (3/3) ... [2019-12-07 18:37:14,850 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-2.i [2019-12-07 18:37:14,856 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:37:14,861 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-12-07 18:37:14,868 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-12-07 18:37:14,880 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:37:14,880 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 18:37:14,880 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:37:14,880 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:37:14,880 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:37:14,880 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:37:14,880 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:37:14,881 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:37:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-12-07 18:37:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:37:14,896 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:14,896 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:14,897 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:14,900 INFO L82 PathProgramCache]: Analyzing trace with hash 578856491, now seen corresponding path program 1 times [2019-12-07 18:37:14,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:14,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628860026] [2019-12-07 18:37:14,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:15,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628860026] [2019-12-07 18:37:15,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:15,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:37:15,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509675135] [2019-12-07 18:37:15,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:37:15,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:15,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:37:15,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:37:15,027 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2019-12-07 18:37:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:15,103 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2019-12-07 18:37:15,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:37:15,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 18:37:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:15,109 INFO L225 Difference]: With dead ends: 50 [2019-12-07 18:37:15,109 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 18:37:15,110 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:37:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 18:37:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-12-07 18:37:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 18:37:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2019-12-07 18:37:15,134 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 10 [2019-12-07 18:37:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:15,134 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2019-12-07 18:37:15,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:37:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2019-12-07 18:37:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:37:15,134 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:15,135 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:15,135 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:15,135 INFO L82 PathProgramCache]: Analyzing trace with hash 764657291, now seen corresponding path program 1 times [2019-12-07 18:37:15,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:15,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346598170] [2019-12-07 18:37:15,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:15,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346598170] [2019-12-07 18:37:15,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:15,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:37:15,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595778197] [2019-12-07 18:37:15,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:37:15,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:15,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:37:15,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:37:15,196 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 5 states. [2019-12-07 18:37:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:15,282 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2019-12-07 18:37:15,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:37:15,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:37:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:15,283 INFO L225 Difference]: With dead ends: 51 [2019-12-07 18:37:15,283 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 18:37:15,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:37:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 18:37:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2019-12-07 18:37:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 18:37:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-12-07 18:37:15,288 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 11 [2019-12-07 18:37:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:15,288 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-12-07 18:37:15,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:37:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-12-07 18:37:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:37:15,289 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:15,289 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:15,289 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash 764657292, now seen corresponding path program 1 times [2019-12-07 18:37:15,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:15,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105792605] [2019-12-07 18:37:15,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:15,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105792605] [2019-12-07 18:37:15,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:15,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:37:15,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963652686] [2019-12-07 18:37:15,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:37:15,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:15,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:37:15,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:37:15,337 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2019-12-07 18:37:15,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:15,432 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2019-12-07 18:37:15,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:37:15,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:37:15,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:15,433 INFO L225 Difference]: With dead ends: 60 [2019-12-07 18:37:15,433 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 18:37:15,434 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:37:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 18:37:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2019-12-07 18:37:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:37:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-12-07 18:37:15,438 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 11 [2019-12-07 18:37:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:15,438 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2019-12-07 18:37:15,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:37:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2019-12-07 18:37:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 18:37:15,439 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:15,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:15,439 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:15,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2109784215, now seen corresponding path program 1 times [2019-12-07 18:37:15,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:15,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155813440] [2019-12-07 18:37:15,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:15,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155813440] [2019-12-07 18:37:15,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:15,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 18:37:15,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573397772] [2019-12-07 18:37:15,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:37:15,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:37:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:37:15,486 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2019-12-07 18:37:15,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:15,559 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-12-07 18:37:15,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:37:15,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 18:37:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:15,561 INFO L225 Difference]: With dead ends: 57 [2019-12-07 18:37:15,561 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 18:37:15,561 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:37:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 18:37:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2019-12-07 18:37:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:37:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-12-07 18:37:15,565 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 16 [2019-12-07 18:37:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:15,566 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2019-12-07 18:37:15,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:37:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2019-12-07 18:37:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 18:37:15,566 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:15,567 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:15,567 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash 978842128, now seen corresponding path program 1 times [2019-12-07 18:37:15,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:15,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839570725] [2019-12-07 18:37:15,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:15,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839570725] [2019-12-07 18:37:15,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:15,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 18:37:15,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462007127] [2019-12-07 18:37:15,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 18:37:15,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:15,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:37:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:37:15,638 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2019-12-07 18:37:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:15,765 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2019-12-07 18:37:15,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:37:15,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-12-07 18:37:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:15,766 INFO L225 Difference]: With dead ends: 89 [2019-12-07 18:37:15,766 INFO L226 Difference]: Without dead ends: 89 [2019-12-07 18:37:15,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:37:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-12-07 18:37:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2019-12-07 18:37:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 18:37:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2019-12-07 18:37:15,771 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 17 [2019-12-07 18:37:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:15,771 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2019-12-07 18:37:15,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 18:37:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2019-12-07 18:37:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 18:37:15,772 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:15,772 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:15,772 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1500988158, now seen corresponding path program 1 times [2019-12-07 18:37:15,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:15,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118343662] [2019-12-07 18:37:15,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:15,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118343662] [2019-12-07 18:37:15,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:15,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 18:37:15,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420923216] [2019-12-07 18:37:15,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:37:15,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:15,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:37:15,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:37:15,822 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2019-12-07 18:37:15,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:15,962 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2019-12-07 18:37:15,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:37:15,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-07 18:37:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:15,963 INFO L225 Difference]: With dead ends: 68 [2019-12-07 18:37:15,963 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 18:37:15,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:37:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 18:37:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2019-12-07 18:37:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 18:37:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-12-07 18:37:15,967 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 19 [2019-12-07 18:37:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:15,968 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-12-07 18:37:15,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:37:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-12-07 18:37:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 18:37:15,968 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:15,968 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:15,969 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:15,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1500988159, now seen corresponding path program 1 times [2019-12-07 18:37:15,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:15,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942236575] [2019-12-07 18:37:15,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:16,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942236575] [2019-12-07 18:37:16,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:16,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 18:37:16,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522587270] [2019-12-07 18:37:16,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:37:16,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:16,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:37:16,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:37:16,035 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2019-12-07 18:37:16,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:16,206 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2019-12-07 18:37:16,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:37:16,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-07 18:37:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:16,207 INFO L225 Difference]: With dead ends: 64 [2019-12-07 18:37:16,207 INFO L226 Difference]: Without dead ends: 64 [2019-12-07 18:37:16,207 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:37:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-07 18:37:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2019-12-07 18:37:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-12-07 18:37:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2019-12-07 18:37:16,212 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 19 [2019-12-07 18:37:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:16,212 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2019-12-07 18:37:16,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:37:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-12-07 18:37:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 18:37:16,213 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:16,213 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:16,213 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:16,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:16,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2137255130, now seen corresponding path program 1 times [2019-12-07 18:37:16,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:16,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612657183] [2019-12-07 18:37:16,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:16,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612657183] [2019-12-07 18:37:16,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998054379] [2019-12-07 18:37:16,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:16,374 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 18:37:16,378 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:16,438 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 18:37:16,439 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:16,444 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:16,447 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 18:37:16,447 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:16,451 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:16,451 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:16,451 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-12-07 18:37:16,473 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 18:37:16,473 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:16,478 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:16,480 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 18:37:16,480 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:16,486 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:16,486 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:16,487 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-12-07 18:37:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:16,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:16,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2019-12-07 18:37:16,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153163682] [2019-12-07 18:37:16,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:37:16,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:16,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:37:16,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:37:16,490 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 12 states. [2019-12-07 18:37:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:16,626 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2019-12-07 18:37:16,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:37:16,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-12-07 18:37:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:16,627 INFO L225 Difference]: With dead ends: 59 [2019-12-07 18:37:16,627 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 18:37:16,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:37:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 18:37:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2019-12-07 18:37:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 18:37:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-12-07 18:37:16,630 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 20 [2019-12-07 18:37:16,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:16,630 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2019-12-07 18:37:16,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:37:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2019-12-07 18:37:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 18:37:16,631 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:16,631 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:16,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:16,833 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:16,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1830400864, now seen corresponding path program 1 times [2019-12-07 18:37:16,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:16,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660433573] [2019-12-07 18:37:16,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:16,896 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:37:16,897 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:37:16,904 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-12-07 18:37:16,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:37:16 BoogieIcfgContainer [2019-12-07 18:37:16,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:37:16,914 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:37:16,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:37:16,914 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:37:16,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:14" (3/4) ... [2019-12-07 18:37:16,917 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:37:16,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:37:16,918 INFO L168 Benchmark]: Toolchain (without parser) took 2736.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 934.0 MB in the beginning and 927.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 91.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:16,918 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:16,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -130.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:16,919 INFO L168 Benchmark]: Boogie Preprocessor took 39.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:16,919 INFO L168 Benchmark]: RCFGBuilder took 309.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:16,920 INFO L168 Benchmark]: TraceAbstraction took 2067.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 927.4 MB in the end (delta: 81.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:16,920 INFO L168 Benchmark]: Witness Printer took 3.04 ms. Allocated memory is still 1.1 GB. Free memory is still 927.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:16,922 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 314.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -130.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 309.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2067.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 927.4 MB in the end (delta: 81.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.04 ms. Allocated memory is still 1.1 GB. Free memory is still 927.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L522] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L523] List t; [L524] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] p->h = 1 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L533] p->n = 0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L534] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L535] COND TRUE p!=0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1] [L536] COND FALSE !(p->h != 1) [L539] EXPR p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}] [L539] p = p->n [L535] COND FALSE !(p!=0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] [L541] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 66 locations, 16 error locations. Result: UNSAFE, OverallTime: 2.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 531 SDslu, 398 SDs, 0 SdLazy, 890 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 98 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 12426 SizeOfPredicates, 11 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 18:37:18,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:37:18,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:37:18,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-12-07 18:37:18,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:37:18,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:37:18,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:37:18,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:37:18,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:37:18,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:37:18,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:37:18,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:37:18,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:37:18,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:37:18,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:37:18,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:37:18,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:37:18,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:37:18,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:37:18,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:37:18,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:37:18,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:37:18,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:37:18,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:37:18,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:37:18,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:37:18,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:37:18,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:37:18,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:37:18,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:37:18,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:37:18,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:37:18,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:37:18,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-12-07 18:37:18,386 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:37:18,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:37:18,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:37:18,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:37:18,388 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:37:18,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:37:18,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:37:18,388 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:37:18,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:37:18,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:37:18,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:37:18,389 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 18:37:18,389 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 18:37:18,390 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 18:37:18,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:37:18,390 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 18:37:18,390 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 18:37:18,390 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 18:37:18,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:37:18,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:37:18,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:37:18,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:37:18,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:37:18,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:37:18,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:37:18,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:37:18,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:37:18,392 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 18:37:18,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 18:37:18,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:37:18,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 18:37:18,392 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17ff5ae56efea2deac29e7fa779d53a24810a7c7 [2019-12-07 18:37:18,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:37:18,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:37:18,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:37:18,561 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:37:18,561 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:37:18,561 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-2.i [2019-12-07 18:37:18,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/994be5f61/369dd890b1454aa9aaa746c077a16011/FLAG18f9028f7 [2019-12-07 18:37:19,099 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:37:19,099 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/sv-benchmarks/c/list-properties/simple-2.i [2019-12-07 18:37:19,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/994be5f61/369dd890b1454aa9aaa746c077a16011/FLAG18f9028f7 [2019-12-07 18:37:19,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/data/994be5f61/369dd890b1454aa9aaa746c077a16011 [2019-12-07 18:37:19,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:37:19,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 18:37:19,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:19,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:37:19,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:37:19,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd4f328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19, skipping insertion in model container [2019-12-07 18:37:19,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:37:19,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:37:19,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:19,384 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:37:19,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:19,449 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:37:19,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19 WrapperNode [2019-12-07 18:37:19,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:19,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:37:19,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:37:19,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:37:19,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... [2019-12-07 18:37:19,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:37:19,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:37:19,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:37:19,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:37:19,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:37:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-12-07 18:37:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 18:37:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 18:37:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 18:37:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 18:37:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 18:37:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 18:37:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 18:37:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 18:37:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 18:37:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 18:37:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-12-07 18:37:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-12-07 18:37:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:37:19,726 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-12-07 18:37:19,864 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:37:19,864 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 18:37:19,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:19 BoogieIcfgContainer [2019-12-07 18:37:19,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:37:19,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:37:19,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:37:19,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:37:19,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:37:19" (1/3) ... [2019-12-07 18:37:19,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569c5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:19, skipping insertion in model container [2019-12-07 18:37:19,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:19" (2/3) ... [2019-12-07 18:37:19,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569c5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:19, skipping insertion in model container [2019-12-07 18:37:19,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:19" (3/3) ... [2019-12-07 18:37:19,870 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-2.i [2019-12-07 18:37:19,877 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:37:19,881 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-12-07 18:37:19,889 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-12-07 18:37:19,901 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:37:19,901 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 18:37:19,901 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:37:19,901 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:37:19,901 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:37:19,901 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:37:19,901 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:37:19,901 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:37:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-12-07 18:37:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:37:19,916 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:19,917 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:19,917 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:19,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:19,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1404783650, now seen corresponding path program 1 times [2019-12-07 18:37:19,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:19,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577766241] [2019-12-07 18:37:19,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:20,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:37:20,024 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:20,071 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:37:20,071 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:20,077 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:20,077 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:20,078 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 18:37:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:20,091 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:20,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577766241] [2019-12-07 18:37:20,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:20,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 18:37:20,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095280937] [2019-12-07 18:37:20,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:37:20,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:20,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:37:20,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:37:20,120 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2019-12-07 18:37:20,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:20,274 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-12-07 18:37:20,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:37:20,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 18:37:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:20,281 INFO L225 Difference]: With dead ends: 57 [2019-12-07 18:37:20,281 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 18:37:20,282 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:37:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 18:37:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2019-12-07 18:37:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 18:37:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-12-07 18:37:20,307 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 10 [2019-12-07 18:37:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:20,307 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-12-07 18:37:20,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:37:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-12-07 18:37:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:37:20,308 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:20,308 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:20,509 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 18:37:20,509 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:20,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1404783651, now seen corresponding path program 1 times [2019-12-07 18:37:20,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:20,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463130849] [2019-12-07 18:37:20,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:20,623 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:37:20,624 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:20,632 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:37:20,633 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:20,638 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:20,638 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:20,638 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 18:37:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:20,659 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:20,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463130849] [2019-12-07 18:37:20,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:20,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 18:37:20,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917826999] [2019-12-07 18:37:20,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:37:20,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:20,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:37:20,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:37:20,727 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2019-12-07 18:37:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:20,977 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2019-12-07 18:37:20,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:37:20,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 18:37:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:20,978 INFO L225 Difference]: With dead ends: 58 [2019-12-07 18:37:20,979 INFO L226 Difference]: Without dead ends: 58 [2019-12-07 18:37:20,979 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:37:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-07 18:37:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2019-12-07 18:37:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 18:37:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-12-07 18:37:20,984 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 10 [2019-12-07 18:37:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:20,984 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-12-07 18:37:20,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:37:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-12-07 18:37:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 18:37:20,985 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:20,985 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:21,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 18:37:21,186 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1238965195, now seen corresponding path program 1 times [2019-12-07 18:37:21,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:21,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758391157] [2019-12-07 18:37:21,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:21,266 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:37:21,267 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:21,277 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:21,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758391157] [2019-12-07 18:37:21,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:21,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 18:37:21,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930519297] [2019-12-07 18:37:21,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:37:21,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:21,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:37:21,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:37:21,284 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2019-12-07 18:37:21,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:21,381 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2019-12-07 18:37:21,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:37:21,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 18:37:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:21,383 INFO L225 Difference]: With dead ends: 55 [2019-12-07 18:37:21,383 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 18:37:21,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:37:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 18:37:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2019-12-07 18:37:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 18:37:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-12-07 18:37:21,388 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 15 [2019-12-07 18:37:21,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:21,388 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2019-12-07 18:37:21,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:37:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2019-12-07 18:37:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 18:37:21,389 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:21,389 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:21,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 18:37:21,591 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:21,592 INFO L82 PathProgramCache]: Analyzing trace with hash 246825543, now seen corresponding path program 1 times [2019-12-07 18:37:21,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:21,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721010065] [2019-12-07 18:37:21,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:21,727 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:37:21,728 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:21,741 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 18:37:21,741 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:21,747 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:21,747 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:21,747 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-12-07 18:37:21,772 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-12-07 18:37:21,772 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2019-12-07 18:37:21,773 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:21,775 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:21,775 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:21,775 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2019-12-07 18:37:21,796 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 18:37:21,797 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:21,799 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:21,799 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:21,799 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2019-12-07 18:37:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:21,807 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:21,814 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:37:21,819 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:21,820 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:37:21,820 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:19 [2019-12-07 18:37:21,855 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2019-12-07 18:37:21,857 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:21,900 INFO L614 ElimStorePlain]: treesize reduction 34, result has 39.3 percent of original size [2019-12-07 18:37:21,901 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 18:37:21,901 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-12-07 18:37:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:21,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721010065] [2019-12-07 18:37:21,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:21,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-12-07 18:37:21,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544670587] [2019-12-07 18:37:21,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 18:37:21,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:37:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:37:21,907 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 8 states. [2019-12-07 18:37:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:22,207 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2019-12-07 18:37:22,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:37:22,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-12-07 18:37:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:22,209 INFO L225 Difference]: With dead ends: 86 [2019-12-07 18:37:22,209 INFO L226 Difference]: Without dead ends: 86 [2019-12-07 18:37:22,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:37:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-12-07 18:37:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2019-12-07 18:37:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 18:37:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-12-07 18:37:22,214 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 16 [2019-12-07 18:37:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:22,214 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-12-07 18:37:22,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 18:37:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-12-07 18:37:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 18:37:22,214 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:22,215 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:22,415 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 18:37:22,416 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -199427220, now seen corresponding path program 1 times [2019-12-07 18:37:22,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:22,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016078523] [2019-12-07 18:37:22,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:22,561 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:37:22,563 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:22,567 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:37:22,567 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:22,569 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:22,569 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:22,569 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 18:37:22,578 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-12-07 18:37:22,578 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:22,585 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:22,586 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:22,586 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:11 [2019-12-07 18:37:22,596 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2019-12-07 18:37:22,597 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:22,598 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:22,599 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:22,599 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2019-12-07 18:37:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:22,611 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:22,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016078523] [2019-12-07 18:37:22,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:22,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 18:37:22,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893745433] [2019-12-07 18:37:22,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:37:22,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:22,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:37:22,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:37:22,623 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2019-12-07 18:37:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:22,873 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2019-12-07 18:37:22,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 18:37:22,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-07 18:37:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:22,874 INFO L225 Difference]: With dead ends: 66 [2019-12-07 18:37:22,874 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 18:37:22,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:37:22,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 18:37:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2019-12-07 18:37:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:37:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-12-07 18:37:22,878 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 17 [2019-12-07 18:37:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:22,878 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2019-12-07 18:37:22,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:37:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2019-12-07 18:37:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 18:37:22,879 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:22,879 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:23,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 18:37:23,080 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:23,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:23,081 INFO L82 PathProgramCache]: Analyzing trace with hash -199427219, now seen corresponding path program 1 times [2019-12-07 18:37:23,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:23,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037530219] [2019-12-07 18:37:23,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:23,180 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:37:23,181 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:23,185 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:37:23,185 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,189 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:23,189 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,189 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 18:37:23,200 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-12-07 18:37:23,201 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,211 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:23,214 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-12-07 18:37:23,215 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,224 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:23,225 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,225 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2019-12-07 18:37:23,245 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-12-07 18:37:23,245 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,253 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:23,255 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-12-07 18:37:23,255 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,259 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:23,259 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:23,259 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2019-12-07 18:37:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:23,279 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:23,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037530219] [2019-12-07 18:37:23,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:23,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-12-07 18:37:23,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4101825] [2019-12-07 18:37:23,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 18:37:23,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:23,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 18:37:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:37:23,511 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 10 states. [2019-12-07 18:37:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:24,241 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2019-12-07 18:37:24,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 18:37:24,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-12-07 18:37:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:24,242 INFO L225 Difference]: With dead ends: 62 [2019-12-07 18:37:24,242 INFO L226 Difference]: Without dead ends: 62 [2019-12-07 18:37:24,242 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:37:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-12-07 18:37:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-12-07 18:37:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 18:37:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-12-07 18:37:24,245 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 17 [2019-12-07 18:37:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:24,245 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-12-07 18:37:24,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 18:37:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-12-07 18:37:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 18:37:24,246 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:24,246 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:24,446 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 18:37:24,447 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:24,448 INFO L82 PathProgramCache]: Analyzing trace with hash 200611076, now seen corresponding path program 1 times [2019-12-07 18:37:24,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:24,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094361808] [2019-12-07 18:37:24,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:24,628 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:37:24,629 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:24,649 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-12-07 18:37:24,649 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:24,661 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:24,666 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-12-07 18:37:24,666 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:24,677 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:24,677 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:24,677 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2019-12-07 18:37:24,718 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-12-07 18:37:24,718 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:24,726 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:24,727 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-12-07 18:37:24,728 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:37:24,731 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:37:24,731 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:37:24,731 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2019-12-07 18:37:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:24,753 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:24,765 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2019-12-07 18:37:24,765 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-12-07 18:37:24,778 INFO L614 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2019-12-07 18:37:24,778 INFO L502 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2019-12-07 18:37:24,778 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 18:37:24,779 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2019-12-07 18:37:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:24,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094361808] [2019-12-07 18:37:24,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:24,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-12-07 18:37:24,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993280042] [2019-12-07 18:37:24,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:37:24,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:24,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:37:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:37:24,784 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 7 states. [2019-12-07 18:37:26,921 WARN L192 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2019-12-07 18:37:29,059 WARN L192 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2019-12-07 18:37:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:29,164 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2019-12-07 18:37:29,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:37:29,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-07 18:37:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:29,165 INFO L225 Difference]: With dead ends: 57 [2019-12-07 18:37:29,165 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 18:37:29,165 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:37:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 18:37:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2019-12-07 18:37:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 18:37:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-12-07 18:37:29,168 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 19 [2019-12-07 18:37:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:29,168 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-12-07 18:37:29,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:37:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-12-07 18:37:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 18:37:29,169 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:29,169 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:29,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 18:37:29,371 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:37:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:29,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1923974807, now seen corresponding path program 1 times [2019-12-07 18:37:29,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:29,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688131081] [2019-12-07 18:37:29,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a96a156-e33f-4953-b75b-314e0bd94644/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 18:37:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:29,583 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 18:37:29,583 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:37:29,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 18:37:29,806 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-12-07 18:37:29,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:37:29 BoogieIcfgContainer [2019-12-07 18:37:29,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:37:29,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:37:29,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:37:29,828 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:37:29,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:19" (3/4) ... [2019-12-07 18:37:29,832 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:37:29,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:37:29,833 INFO L168 Benchmark]: Toolchain (without parser) took 10709.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.1 MB). Free memory was 947.0 MB in the beginning and 938.9 MB in the end (delta: 8.2 MB). Peak memory consumption was 216.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:29,834 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:29,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:29,835 INFO L168 Benchmark]: Boogie Preprocessor took 41.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:29,835 INFO L168 Benchmark]: RCFGBuilder took 373.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.3 MB). Peak memory consumption was 54.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:29,836 INFO L168 Benchmark]: TraceAbstraction took 9961.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.0 GB in the beginning and 938.9 MB in the end (delta: 104.0 MB). Peak memory consumption was 183.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:29,836 INFO L168 Benchmark]: Witness Printer took 4.33 ms. Allocated memory is still 1.2 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:29,838 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 373.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.3 MB). Peak memory consumption was 54.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9961.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.0 GB in the beginning and 938.9 MB in the end (delta: 104.0 MB). Peak memory consumption was 183.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.33 ms. Allocated memory is still 1.2 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L522] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L523] List t; [L524] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] p->h = 1 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L533] p->n = 0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L534] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L535] COND TRUE p!=0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1] [L536] COND FALSE !(p->h != 1) [L539] EXPR p->n VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}] [L539] p = p->n [L535] COND FALSE !(p!=0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] [L541] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 16 error locations. Result: UNSAFE, OverallTime: 9.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 191 SDtfs, 434 SDslu, 470 SDs, 0 SdLazy, 619 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 97 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 194 ConstructedInterpolants, 1 QuantifiedInterpolants, 14092 SizeOfPredicates, 49 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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 Received shutdown request...