./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/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 c1eee0363564b6d4551a57eb6d1fbf96320d9c79 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/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 c1eee0363564b6d4551a57eb6d1fbf96320d9c79 .................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: Sort C_DOUBLE not declared --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:46:01,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:46:01,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:46:01,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:46:01,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:46:01,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:46:01,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:46:01,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:46:01,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:46:01,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:46:01,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:46:01,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:46:01,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:46:01,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:46:01,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:46:01,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:46:01,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:46:01,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:46:01,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:46:01,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:46:01,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:46:01,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:46:01,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:46:01,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:46:01,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:46:01,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:46:01,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:46:01,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:46:01,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:46:01,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:46:01,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:46:01,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:46:01,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:46:01,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:46:01,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:46:01,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:46:01,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:46:01,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:46:01,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:46:01,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:46:01,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:46:01,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 20:46:01,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:46:01,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:46:01,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:46:01,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:46:01,463 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:46:01,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:46:01,463 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:46:01,464 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:46:01,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:46:01,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:46:01,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:46:01,465 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 20:46:01,465 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 20:46:01,465 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 20:46:01,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:46:01,466 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:46:01,466 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:46:01,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:46:01,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:46:01,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:46:01,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:46:01,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:46:01,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:46:01,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:46:01,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:46:01,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:46:01,469 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_0c842c02-631b-4eb7-b870-608e0239deda/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 -> c1eee0363564b6d4551a57eb6d1fbf96320d9c79 [2019-11-15 20:46:01,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:46:01,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:46:01,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:46:01,531 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:46:01,532 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:46:01,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/../../sv-benchmarks/c/memsafety/lockfree-3.1.i [2019-11-15 20:46:01,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/30486dc50/df7e6c55656c4ff199c14da0d6653799/FLAG4aa2619f9 [2019-11-15 20:46:02,175 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:46:02,176 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/sv-benchmarks/c/memsafety/lockfree-3.1.i [2019-11-15 20:46:02,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/30486dc50/df7e6c55656c4ff199c14da0d6653799/FLAG4aa2619f9 [2019-11-15 20:46:02,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/30486dc50/df7e6c55656c4ff199c14da0d6653799 [2019-11-15 20:46:02,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:46:02,429 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 20:46:02,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:46:02,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:46:02,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:46:02,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:46:02" (1/1) ... [2019-11-15 20:46:02,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6ff2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:02, skipping insertion in model container [2019-11-15 20:46:02,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:46:02" (1/1) ... [2019-11-15 20:46:02,450 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:46:02,505 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:46:03,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:46:03,039 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:46:03,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:46:03,191 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:46:03,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03 WrapperNode [2019-11-15 20:46:03,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:46:03,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:46:03,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:46:03,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:46:03,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... [2019-11-15 20:46:03,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... [2019-11-15 20:46:03,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... [2019-11-15 20:46:03,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... [2019-11-15 20:46:03,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... [2019-11-15 20:46:03,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... [2019-11-15 20:46:03,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... [2019-11-15 20:46:03,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:46:03,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:46:03,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:46:03,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:46:03,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/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 [2019-11-15 20:46:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 20:46:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:46:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 20:46:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 20:46:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 20:46:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 20:46:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 20:46:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2019-11-15 20:46:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2019-11-15 20:46:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 20:46:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-15 20:46:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 20:46:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 20:46:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 20:46:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 20:46:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 20:46:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 20:46:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 20:46:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 20:46:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 20:46:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 20:46:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 20:46:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 20:46:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 20:46:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 20:46:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 20:46:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 20:46:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 20:46:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 20:46:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 20:46:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 20:46:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 20:46:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 20:46:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 20:46:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 20:46:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 20:46:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 20:46:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 20:46:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 20:46:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 20:46:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 20:46:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 20:46:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 20:46:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 20:46:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 20:46:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 20:46:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 20:46:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 20:46:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 20:46:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 20:46:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 20:46:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 20:46:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 20:46:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 20:46:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 20:46:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 20:46:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 20:46:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 20:46:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 20:46:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 20:46:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 20:46:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 20:46:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 20:46:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 20:46:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 20:46:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 20:46:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 20:46:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 20:46:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 20:46:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 20:46:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 20:46:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 20:46:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 20:46:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 20:46:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 20:46:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 20:46:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 20:46:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 20:46:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 20:46:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 20:46:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 20:46:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 20:46:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 20:46:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 20:46:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 20:46:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 20:46:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 20:46:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 20:46:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 20:46:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 20:46:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 20:46:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 20:46:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 20:46:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 20:46:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 20:46:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 20:46:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 20:46:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 20:46:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 20:46:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 20:46:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 20:46:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 20:46:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 20:46:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 20:46:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 20:46:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 20:46:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 20:46:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 20:46:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 20:46:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 20:46:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 20:46:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 20:46:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 20:46:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 20:46:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 20:46:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 20:46:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 20:46:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 20:46:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 20:46:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure push [2019-11-15 20:46:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 20:46:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:46:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 20:46:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2019-11-15 20:46:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 20:46:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 20:46:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 20:46:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:46:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 20:46:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:46:04,250 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:46:04,250 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 20:46:04,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:46:04 BoogieIcfgContainer [2019-11-15 20:46:04,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:46:04,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:46:04,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:46:04,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:46:04,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:46:02" (1/3) ... [2019-11-15 20:46:04,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fffbb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:46:04, skipping insertion in model container [2019-11-15 20:46:04,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:03" (2/3) ... [2019-11-15 20:46:04,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fffbb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:46:04, skipping insertion in model container [2019-11-15 20:46:04,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:46:04" (3/3) ... [2019-11-15 20:46:04,260 INFO L109 eAbstractionObserver]: Analyzing ICFG lockfree-3.1.i [2019-11-15 20:46:04,271 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:46:04,279 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-11-15 20:46:04,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-11-15 20:46:04,315 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:46:04,315 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 20:46:04,316 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:46:04,316 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:46:04,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:46:04,316 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:46:04,316 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:46:04,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:46:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2019-11-15 20:46:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:46:04,345 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:04,346 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:04,348 INFO L410 AbstractCegarLoop]: === Iteration 1 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:04,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash 406886108, now seen corresponding path program 1 times [2019-11-15 20:46:04,360 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:04,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389447290] [2019-11-15 20:46:04,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:04,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:04,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:04,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389447290] [2019-11-15 20:46:04,649 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:04,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:46:04,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126284555] [2019-11-15 20:46:04,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:46:04,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:04,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:46:04,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:46:04,673 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2019-11-15 20:46:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:05,021 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2019-11-15 20:46:05,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:46:05,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-15 20:46:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:05,036 INFO L225 Difference]: With dead ends: 92 [2019-11-15 20:46:05,036 INFO L226 Difference]: Without dead ends: 89 [2019-11-15 20:46:05,038 INFO L600 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 [2019-11-15 20:46:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-11-15 20:46:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2019-11-15 20:46:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-15 20:46:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2019-11-15 20:46:05,099 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 8 [2019-11-15 20:46:05,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:05,100 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2019-11-15 20:46:05,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:46:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2019-11-15 20:46:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 20:46:05,101 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:05,101 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:05,102 INFO L410 AbstractCegarLoop]: === Iteration 2 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:05,102 INFO L82 PathProgramCache]: Analyzing trace with hash 155309773, now seen corresponding path program 1 times [2019-11-15 20:46:05,103 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:05,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115974958] [2019-11-15 20:46:05,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:05,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:05,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:05,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115974958] [2019-11-15 20:46:05,287 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:05,287 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:46:05,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652414732] [2019-11-15 20:46:05,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:46:05,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:05,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:46:05,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:46:05,290 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand 4 states. [2019-11-15 20:46:05,421 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-15 20:46:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:05,763 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2019-11-15 20:46:05,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:46:05,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-15 20:46:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:05,766 INFO L225 Difference]: With dead ends: 91 [2019-11-15 20:46:05,766 INFO L226 Difference]: Without dead ends: 91 [2019-11-15 20:46:05,767 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:46:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-15 20:46:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2019-11-15 20:46:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 20:46:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2019-11-15 20:46:05,778 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 10 [2019-11-15 20:46:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:05,778 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2019-11-15 20:46:05,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:46:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2019-11-15 20:46:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 20:46:05,780 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:05,780 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:05,780 INFO L410 AbstractCegarLoop]: === Iteration 3 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash 155369355, now seen corresponding path program 1 times [2019-11-15 20:46:05,781 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:05,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65980882] [2019-11-15 20:46:05,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:05,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:05,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:06,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65980882] [2019-11-15 20:46:06,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:06,002 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:46:06,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934734959] [2019-11-15 20:46:06,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:46:06,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:06,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:46:06,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:46:06,007 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand 4 states. [2019-11-15 20:46:06,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:06,414 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2019-11-15 20:46:06,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:46:06,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-15 20:46:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:06,417 INFO L225 Difference]: With dead ends: 135 [2019-11-15 20:46:06,417 INFO L226 Difference]: Without dead ends: 135 [2019-11-15 20:46:06,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:46:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-15 20:46:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 108. [2019-11-15 20:46:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-15 20:46:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2019-11-15 20:46:06,432 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 10 [2019-11-15 20:46:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:06,433 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2019-11-15 20:46:06,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:46:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2019-11-15 20:46:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 20:46:06,434 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:06,434 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:06,435 INFO L410 AbstractCegarLoop]: === Iteration 4 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:06,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:06,435 INFO L82 PathProgramCache]: Analyzing trace with hash 521481310, now seen corresponding path program 1 times [2019-11-15 20:46:06,436 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:06,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862024264] [2019-11-15 20:46:06,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:06,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:06,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:06,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862024264] [2019-11-15 20:46:06,576 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:06,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:46:06,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424097537] [2019-11-15 20:46:06,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:46:06,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:06,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:46:06,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:46:06,579 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 4 states. [2019-11-15 20:46:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:06,879 INFO L93 Difference]: Finished difference Result 149 states and 214 transitions. [2019-11-15 20:46:06,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:46:06,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 20:46:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:06,883 INFO L225 Difference]: With dead ends: 149 [2019-11-15 20:46:06,883 INFO L226 Difference]: Without dead ends: 144 [2019-11-15 20:46:06,884 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:46:06,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-15 20:46:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2019-11-15 20:46:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-15 20:46:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 183 transitions. [2019-11-15 20:46:06,903 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 183 transitions. Word has length 11 [2019-11-15 20:46:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:06,904 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 183 transitions. [2019-11-15 20:46:06,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:46:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 183 transitions. [2019-11-15 20:46:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:46:06,905 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:06,905 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:06,905 INFO L410 AbstractCegarLoop]: === Iteration 5 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:06,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:06,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1196811089, now seen corresponding path program 1 times [2019-11-15 20:46:06,906 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:06,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97420191] [2019-11-15 20:46:06,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:06,907 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:06,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:07,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97420191] [2019-11-15 20:46:07,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:07,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:46:07,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255492452] [2019-11-15 20:46:07,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:46:07,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:46:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:46:07,046 INFO L87 Difference]: Start difference. First operand 126 states and 183 transitions. Second operand 4 states. [2019-11-15 20:46:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:07,571 INFO L93 Difference]: Finished difference Result 220 states and 325 transitions. [2019-11-15 20:46:07,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:46:07,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-15 20:46:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:07,574 INFO L225 Difference]: With dead ends: 220 [2019-11-15 20:46:07,575 INFO L226 Difference]: Without dead ends: 220 [2019-11-15 20:46:07,575 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:46:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-11-15 20:46:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 193. [2019-11-15 20:46:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-11-15 20:46:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 298 transitions. [2019-11-15 20:46:07,595 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 298 transitions. Word has length 13 [2019-11-15 20:46:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:07,596 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 298 transitions. [2019-11-15 20:46:07,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:46:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 298 transitions. [2019-11-15 20:46:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:46:07,597 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:07,597 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:07,598 INFO L410 AbstractCegarLoop]: === Iteration 6 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:07,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1196811090, now seen corresponding path program 1 times [2019-11-15 20:46:07,598 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:07,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099544314] [2019-11-15 20:46:07,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:07,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:07,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:07,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099544314] [2019-11-15 20:46:07,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:07,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:46:07,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608232337] [2019-11-15 20:46:07,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:46:07,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:07,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:46:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:46:07,696 INFO L87 Difference]: Start difference. First operand 193 states and 298 transitions. Second operand 4 states. [2019-11-15 20:46:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:08,139 INFO L93 Difference]: Finished difference Result 271 states and 408 transitions. [2019-11-15 20:46:08,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:46:08,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-15 20:46:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:08,143 INFO L225 Difference]: With dead ends: 271 [2019-11-15 20:46:08,143 INFO L226 Difference]: Without dead ends: 271 [2019-11-15 20:46:08,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:46:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-11-15 20:46:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 247. [2019-11-15 20:46:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-11-15 20:46:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 382 transitions. [2019-11-15 20:46:08,163 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 382 transitions. Word has length 13 [2019-11-15 20:46:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:08,163 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 382 transitions. [2019-11-15 20:46:08,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:46:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 382 transitions. [2019-11-15 20:46:08,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 20:46:08,165 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:08,165 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:08,165 INFO L410 AbstractCegarLoop]: === Iteration 7 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:08,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:08,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1553554911, now seen corresponding path program 1 times [2019-11-15 20:46:08,166 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:08,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055622287] [2019-11-15 20:46:08,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:08,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:08,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:08,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055622287] [2019-11-15 20:46:08,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:08,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:46:08,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481266823] [2019-11-15 20:46:08,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:46:08,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:46:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:46:08,279 INFO L87 Difference]: Start difference. First operand 247 states and 382 transitions. Second operand 6 states. [2019-11-15 20:46:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:08,628 INFO L93 Difference]: Finished difference Result 473 states and 709 transitions. [2019-11-15 20:46:08,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 20:46:08,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-15 20:46:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:08,637 INFO L225 Difference]: With dead ends: 473 [2019-11-15 20:46:08,637 INFO L226 Difference]: Without dead ends: 473 [2019-11-15 20:46:08,638 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:46:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-11-15 20:46:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 439. [2019-11-15 20:46:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2019-11-15 20:46:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 675 transitions. [2019-11-15 20:46:08,670 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 675 transitions. Word has length 14 [2019-11-15 20:46:08,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:08,671 INFO L462 AbstractCegarLoop]: Abstraction has 439 states and 675 transitions. [2019-11-15 20:46:08,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:46:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 675 transitions. [2019-11-15 20:46:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 20:46:08,672 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:08,672 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:08,673 INFO L410 AbstractCegarLoop]: === Iteration 8 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:08,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1849836300, now seen corresponding path program 1 times [2019-11-15 20:46:08,674 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:08,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374553848] [2019-11-15 20:46:08,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:08,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:08,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:08,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374553848] [2019-11-15 20:46:08,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:08,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:46:08,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137244515] [2019-11-15 20:46:08,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:46:08,837 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:08,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:46:08,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:46:08,838 INFO L87 Difference]: Start difference. First operand 439 states and 675 transitions. Second operand 6 states. [2019-11-15 20:46:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:09,190 INFO L93 Difference]: Finished difference Result 825 states and 1195 transitions. [2019-11-15 20:46:09,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 20:46:09,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-15 20:46:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:09,203 INFO L225 Difference]: With dead ends: 825 [2019-11-15 20:46:09,203 INFO L226 Difference]: Without dead ends: 825 [2019-11-15 20:46:09,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:46:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2019-11-15 20:46:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 787. [2019-11-15 20:46:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-11-15 20:46:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1155 transitions. [2019-11-15 20:46:09,243 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1155 transitions. Word has length 15 [2019-11-15 20:46:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:09,243 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1155 transitions. [2019-11-15 20:46:09,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:46:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1155 transitions. [2019-11-15 20:46:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 20:46:09,245 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:09,246 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:09,246 INFO L410 AbstractCegarLoop]: === Iteration 9 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:09,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1460861468, now seen corresponding path program 1 times [2019-11-15 20:46:09,247 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:09,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797494240] [2019-11-15 20:46:09,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:09,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:09,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:09,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797494240] [2019-11-15 20:46:09,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387372744] [2019-11-15 20:46:09,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/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 [2019-11-15 20:46:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:09,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 20:46:09,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:09,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:09,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:09,787 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:46:09,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2019-11-15 20:46:09,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715809922] [2019-11-15 20:46:09,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:46:09,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:09,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:46:09,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:46:09,788 INFO L87 Difference]: Start difference. First operand 787 states and 1155 transitions. Second operand 5 states. [2019-11-15 20:46:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:09,884 INFO L93 Difference]: Finished difference Result 1183 states and 1782 transitions. [2019-11-15 20:46:09,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:46:09,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 20:46:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:09,894 INFO L225 Difference]: With dead ends: 1183 [2019-11-15 20:46:09,894 INFO L226 Difference]: Without dead ends: 1183 [2019-11-15 20:46:09,895 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-15 20:46:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-11-15 20:46:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1165. [2019-11-15 20:46:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-11-15 20:46:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1774 transitions. [2019-11-15 20:46:09,965 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1774 transitions. Word has length 22 [2019-11-15 20:46:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:09,966 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1774 transitions. [2019-11-15 20:46:09,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:46:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1774 transitions. [2019-11-15 20:46:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 20:46:09,971 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:09,971 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:10,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:10,180 INFO L410 AbstractCegarLoop]: === Iteration 10 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1432975042, now seen corresponding path program 1 times [2019-11-15 20:46:10,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:10,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076958040] [2019-11-15 20:46:10,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:10,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:10,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:10,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076958040] [2019-11-15 20:46:10,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014432299] [2019-11-15 20:46:10,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:10,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 20:46:10,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:10,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:10,618 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:10,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2019-11-15 20:46:10,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333494147] [2019-11-15 20:46:10,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:46:10,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:10,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:46:10,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:46:10,621 INFO L87 Difference]: Start difference. First operand 1165 states and 1774 transitions. Second operand 8 states. [2019-11-15 20:46:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:11,600 INFO L93 Difference]: Finished difference Result 1911 states and 2806 transitions. [2019-11-15 20:46:11,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 20:46:11,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-11-15 20:46:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:11,614 INFO L225 Difference]: With dead ends: 1911 [2019-11-15 20:46:11,614 INFO L226 Difference]: Without dead ends: 1911 [2019-11-15 20:46:11,615 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:46:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2019-11-15 20:46:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1795. [2019-11-15 20:46:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2019-11-15 20:46:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2664 transitions. [2019-11-15 20:46:11,699 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2664 transitions. Word has length 24 [2019-11-15 20:46:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:11,701 INFO L462 AbstractCegarLoop]: Abstraction has 1795 states and 2664 transitions. [2019-11-15 20:46:11,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:46:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2664 transitions. [2019-11-15 20:46:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 20:46:11,705 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:11,705 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:11,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:11,916 INFO L410 AbstractCegarLoop]: === Iteration 11 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:11,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:11,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2052097881, now seen corresponding path program 1 times [2019-11-15 20:46:11,917 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:11,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377301212] [2019-11-15 20:46:11,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:11,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:11,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:12,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377301212] [2019-11-15 20:46:12,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:12,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 20:46:12,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043716457] [2019-11-15 20:46:12,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:46:12,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:12,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:46:12,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:46:12,122 INFO L87 Difference]: Start difference. First operand 1795 states and 2664 transitions. Second operand 8 states. [2019-11-15 20:46:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:13,175 INFO L93 Difference]: Finished difference Result 718 states and 935 transitions. [2019-11-15 20:46:13,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 20:46:13,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-11-15 20:46:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:13,180 INFO L225 Difference]: With dead ends: 718 [2019-11-15 20:46:13,180 INFO L226 Difference]: Without dead ends: 622 [2019-11-15 20:46:13,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:46:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-15 20:46:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 516. [2019-11-15 20:46:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2019-11-15 20:46:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 696 transitions. [2019-11-15 20:46:13,207 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 696 transitions. Word has length 29 [2019-11-15 20:46:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:13,207 INFO L462 AbstractCegarLoop]: Abstraction has 516 states and 696 transitions. [2019-11-15 20:46:13,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:46:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 696 transitions. [2019-11-15 20:46:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 20:46:13,210 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:13,211 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:13,211 INFO L410 AbstractCegarLoop]: === Iteration 12 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:13,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:13,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1040852765, now seen corresponding path program 1 times [2019-11-15 20:46:13,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:13,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418730058] [2019-11-15 20:46:13,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:13,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:13,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:13,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418730058] [2019-11-15 20:46:13,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535656654] [2019-11-15 20:46:13,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:13,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 20:46:13,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:13,682 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:13,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2019-11-15 20:46:13,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889382831] [2019-11-15 20:46:13,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 20:46:13,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:13,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 20:46:13,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:46:13,685 INFO L87 Difference]: Start difference. First operand 516 states and 696 transitions. Second operand 11 states. [2019-11-15 20:46:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:15,142 INFO L93 Difference]: Finished difference Result 1007 states and 1342 transitions. [2019-11-15 20:46:15,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-15 20:46:15,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2019-11-15 20:46:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:15,149 INFO L225 Difference]: With dead ends: 1007 [2019-11-15 20:46:15,149 INFO L226 Difference]: Without dead ends: 1007 [2019-11-15 20:46:15,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2019-11-15 20:46:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2019-11-15 20:46:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 540. [2019-11-15 20:46:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-11-15 20:46:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 714 transitions. [2019-11-15 20:46:15,185 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 714 transitions. Word has length 29 [2019-11-15 20:46:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:15,186 INFO L462 AbstractCegarLoop]: Abstraction has 540 states and 714 transitions. [2019-11-15 20:46:15,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 20:46:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 714 transitions. [2019-11-15 20:46:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 20:46:15,189 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:15,189 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:15,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:15,394 INFO L410 AbstractCegarLoop]: === Iteration 13 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1093253170, now seen corresponding path program 1 times [2019-11-15 20:46:15,394 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:15,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474712609] [2019-11-15 20:46:15,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:15,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:15,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 20:46:15,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474712609] [2019-11-15 20:46:15,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:46:15,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:46:15,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654722874] [2019-11-15 20:46:15,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:46:15,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:15,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:46:15,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:46:15,636 INFO L87 Difference]: Start difference. First operand 540 states and 714 transitions. Second operand 6 states. [2019-11-15 20:46:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:16,221 INFO L93 Difference]: Finished difference Result 560 states and 737 transitions. [2019-11-15 20:46:16,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:46:16,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-11-15 20:46:16,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:16,226 INFO L225 Difference]: With dead ends: 560 [2019-11-15 20:46:16,226 INFO L226 Difference]: Without dead ends: 560 [2019-11-15 20:46:16,226 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:46:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-11-15 20:46:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 542. [2019-11-15 20:46:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-11-15 20:46:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 716 transitions. [2019-11-15 20:46:16,245 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 716 transitions. Word has length 35 [2019-11-15 20:46:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:16,245 INFO L462 AbstractCegarLoop]: Abstraction has 542 states and 716 transitions. [2019-11-15 20:46:16,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:46:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 716 transitions. [2019-11-15 20:46:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 20:46:16,246 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:16,247 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:16,247 INFO L410 AbstractCegarLoop]: === Iteration 14 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:16,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:16,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1815510732, now seen corresponding path program 1 times [2019-11-15 20:46:16,248 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:16,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823053253] [2019-11-15 20:46:16,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:16,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:16,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:46:16,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823053253] [2019-11-15 20:46:16,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880382549] [2019-11-15 20:46:16,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:16,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-15 20:46:16,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:16,769 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:16,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2019-11-15 20:46:16,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315053467] [2019-11-15 20:46:16,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 20:46:16,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:16,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 20:46:16,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:46:16,776 INFO L87 Difference]: Start difference. First operand 542 states and 716 transitions. Second operand 12 states. [2019-11-15 20:46:17,059 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-11-15 20:46:17,198 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-11-15 20:46:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:18,154 INFO L93 Difference]: Finished difference Result 1799 states and 2467 transitions. [2019-11-15 20:46:18,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-15 20:46:18,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2019-11-15 20:46:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:18,166 INFO L225 Difference]: With dead ends: 1799 [2019-11-15 20:46:18,167 INFO L226 Difference]: Without dead ends: 1799 [2019-11-15 20:46:18,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2019-11-15 20:46:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2019-11-15 20:46:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1544. [2019-11-15 20:46:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2019-11-15 20:46:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2084 transitions. [2019-11-15 20:46:18,227 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2084 transitions. Word has length 35 [2019-11-15 20:46:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:18,228 INFO L462 AbstractCegarLoop]: Abstraction has 1544 states and 2084 transitions. [2019-11-15 20:46:18,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 20:46:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2084 transitions. [2019-11-15 20:46:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 20:46:18,230 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:18,231 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:18,434 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:18,434 INFO L410 AbstractCegarLoop]: === Iteration 15 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:18,434 INFO L82 PathProgramCache]: Analyzing trace with hash 714165325, now seen corresponding path program 1 times [2019-11-15 20:46:18,435 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:18,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13171570] [2019-11-15 20:46:18,435 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:18,435 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:18,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:46:18,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13171570] [2019-11-15 20:46:18,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861315605] [2019-11-15 20:46:18,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:18,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 20:46:18,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:18,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:19,044 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:19,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2019-11-15 20:46:19,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929921963] [2019-11-15 20:46:19,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 20:46:19,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:19,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 20:46:19,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:46:19,046 INFO L87 Difference]: Start difference. First operand 1544 states and 2084 transitions. Second operand 14 states. [2019-11-15 20:46:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:20,909 INFO L93 Difference]: Finished difference Result 2837 states and 4125 transitions. [2019-11-15 20:46:20,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-11-15 20:46:20,924 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2019-11-15 20:46:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:20,946 INFO L225 Difference]: With dead ends: 2837 [2019-11-15 20:46:20,947 INFO L226 Difference]: Without dead ends: 2837 [2019-11-15 20:46:20,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2019-11-15 20:46:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2019-11-15 20:46:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1940. [2019-11-15 20:46:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2019-11-15 20:46:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2641 transitions. [2019-11-15 20:46:21,041 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2641 transitions. Word has length 36 [2019-11-15 20:46:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:21,042 INFO L462 AbstractCegarLoop]: Abstraction has 1940 states and 2641 transitions. [2019-11-15 20:46:21,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 20:46:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2641 transitions. [2019-11-15 20:46:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 20:46:21,044 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:21,044 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:21,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:21,256 INFO L410 AbstractCegarLoop]: === Iteration 16 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:21,256 INFO L82 PathProgramCache]: Analyzing trace with hash -207147635, now seen corresponding path program 1 times [2019-11-15 20:46:21,256 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:21,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934483454] [2019-11-15 20:46:21,256 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:21,256 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:21,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:46:21,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934483454] [2019-11-15 20:46:21,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709065437] [2019-11-15 20:46:21,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:21,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 20:46:21,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:21,798 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:21,798 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2019-11-15 20:46:21,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074178915] [2019-11-15 20:46:21,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 20:46:21,799 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:21,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 20:46:21,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-11-15 20:46:21,799 INFO L87 Difference]: Start difference. First operand 1940 states and 2641 transitions. Second operand 13 states. [2019-11-15 20:46:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:22,973 INFO L93 Difference]: Finished difference Result 3019 states and 4658 transitions. [2019-11-15 20:46:22,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 20:46:22,978 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-11-15 20:46:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:23,005 INFO L225 Difference]: With dead ends: 3019 [2019-11-15 20:46:23,006 INFO L226 Difference]: Without dead ends: 3019 [2019-11-15 20:46:23,006 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2019-11-15 20:46:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2019-11-15 20:46:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 2262. [2019-11-15 20:46:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-11-15 20:46:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3111 transitions. [2019-11-15 20:46:23,113 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3111 transitions. Word has length 38 [2019-11-15 20:46:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:23,113 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 3111 transitions. [2019-11-15 20:46:23,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 20:46:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3111 transitions. [2019-11-15 20:46:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 20:46:23,117 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:23,117 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:23,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:23,321 INFO L410 AbstractCegarLoop]: === Iteration 17 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:23,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:23,322 INFO L82 PathProgramCache]: Analyzing trace with hash -283852688, now seen corresponding path program 1 times [2019-11-15 20:46:23,322 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:23,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570461685] [2019-11-15 20:46:23,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:23,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:23,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-15 20:46:23,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570461685] [2019-11-15 20:46:23,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053978926] [2019-11-15 20:46:23,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:23,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:46:23,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-15 20:46:23,833 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:46:23,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2019-11-15 20:46:23,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827910724] [2019-11-15 20:46:23,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:46:23,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:23,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:46:23,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:46:23,835 INFO L87 Difference]: Start difference. First operand 2262 states and 3111 transitions. Second operand 7 states. [2019-11-15 20:46:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:24,132 INFO L93 Difference]: Finished difference Result 1325 states and 1715 transitions. [2019-11-15 20:46:24,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 20:46:24,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2019-11-15 20:46:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:24,141 INFO L225 Difference]: With dead ends: 1325 [2019-11-15 20:46:24,141 INFO L226 Difference]: Without dead ends: 1153 [2019-11-15 20:46:24,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:46:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2019-11-15 20:46:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 965. [2019-11-15 20:46:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-11-15 20:46:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1284 transitions. [2019-11-15 20:46:24,184 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1284 transitions. Word has length 43 [2019-11-15 20:46:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:24,185 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1284 transitions. [2019-11-15 20:46:24,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:46:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1284 transitions. [2019-11-15 20:46:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-15 20:46:24,186 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:24,187 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:24,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:24,392 INFO L410 AbstractCegarLoop]: === Iteration 18 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1483957744, now seen corresponding path program 1 times [2019-11-15 20:46:24,393 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:24,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110129421] [2019-11-15 20:46:24,393 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:24,393 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:24,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-15 20:46:24,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110129421] [2019-11-15 20:46:24,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243585226] [2019-11-15 20:46:24,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:24,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:46:24,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-15 20:46:24,916 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:24,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-11-15 20:46:24,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282634441] [2019-11-15 20:46:24,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 20:46:24,920 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:24,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 20:46:24,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:46:24,920 INFO L87 Difference]: Start difference. First operand 965 states and 1284 transitions. Second operand 12 states. [2019-11-15 20:46:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:25,923 INFO L93 Difference]: Finished difference Result 1273 states and 1767 transitions. [2019-11-15 20:46:25,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 20:46:25,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2019-11-15 20:46:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:25,932 INFO L225 Difference]: With dead ends: 1273 [2019-11-15 20:46:25,933 INFO L226 Difference]: Without dead ends: 1273 [2019-11-15 20:46:25,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2019-11-15 20:46:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2019-11-15 20:46:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 965. [2019-11-15 20:46:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-11-15 20:46:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1284 transitions. [2019-11-15 20:46:25,970 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1284 transitions. Word has length 47 [2019-11-15 20:46:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:25,972 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1284 transitions. [2019-11-15 20:46:25,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 20:46:25,973 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1284 transitions. [2019-11-15 20:46:25,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-15 20:46:25,974 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:25,975 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:26,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:26,180 INFO L410 AbstractCegarLoop]: === Iteration 19 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:26,181 INFO L82 PathProgramCache]: Analyzing trace with hash 94583026, now seen corresponding path program 1 times [2019-11-15 20:46:26,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:26,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753551897] [2019-11-15 20:46:26,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:26,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:26,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 20:46:26,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753551897] [2019-11-15 20:46:26,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152229588] [2019-11-15 20:46:26,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:26,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 20:46:26,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:26,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 20:46:26,822 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:26,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 18 [2019-11-15 20:46:26,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826165936] [2019-11-15 20:46:26,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 20:46:26,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 20:46:26,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-15 20:46:26,824 INFO L87 Difference]: Start difference. First operand 965 states and 1284 transitions. Second operand 18 states. [2019-11-15 20:46:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:29,681 INFO L93 Difference]: Finished difference Result 2010 states and 2828 transitions. [2019-11-15 20:46:29,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-11-15 20:46:29,682 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2019-11-15 20:46:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:29,696 INFO L225 Difference]: With dead ends: 2010 [2019-11-15 20:46:29,696 INFO L226 Difference]: Without dead ends: 1944 [2019-11-15 20:46:29,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=993, Invalid=5327, Unknown=0, NotChecked=0, Total=6320 [2019-11-15 20:46:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2019-11-15 20:46:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1334. [2019-11-15 20:46:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2019-11-15 20:46:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1780 transitions. [2019-11-15 20:46:29,750 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1780 transitions. Word has length 47 [2019-11-15 20:46:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:29,751 INFO L462 AbstractCegarLoop]: Abstraction has 1334 states and 1780 transitions. [2019-11-15 20:46:29,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 20:46:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1780 transitions. [2019-11-15 20:46:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-15 20:46:29,753 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:29,753 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:29,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:29,957 INFO L410 AbstractCegarLoop]: === Iteration 20 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:29,957 INFO L82 PathProgramCache]: Analyzing trace with hash -171717777, now seen corresponding path program 1 times [2019-11-15 20:46:29,957 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:29,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412580316] [2019-11-15 20:46:29,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:29,958 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:29,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-15 20:46:30,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412580316] [2019-11-15 20:46:30,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652976130] [2019-11-15 20:46:30,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:30,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:46:30,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-15 20:46:30,449 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:30,449 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-11-15 20:46:30,449 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821373900] [2019-11-15 20:46:30,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 20:46:30,450 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:30,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 20:46:30,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:46:30,451 INFO L87 Difference]: Start difference. First operand 1334 states and 1780 transitions. Second operand 12 states. [2019-11-15 20:46:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:31,272 INFO L93 Difference]: Finished difference Result 1854 states and 2635 transitions. [2019-11-15 20:46:31,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 20:46:31,274 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2019-11-15 20:46:31,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:31,286 INFO L225 Difference]: With dead ends: 1854 [2019-11-15 20:46:31,286 INFO L226 Difference]: Without dead ends: 1854 [2019-11-15 20:46:31,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2019-11-15 20:46:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2019-11-15 20:46:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1334. [2019-11-15 20:46:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2019-11-15 20:46:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1780 transitions. [2019-11-15 20:46:31,337 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1780 transitions. Word has length 58 [2019-11-15 20:46:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:31,337 INFO L462 AbstractCegarLoop]: Abstraction has 1334 states and 1780 transitions. [2019-11-15 20:46:31,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 20:46:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1780 transitions. [2019-11-15 20:46:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-15 20:46:31,340 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:31,340 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:31,544 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:31,548 INFO L410 AbstractCegarLoop]: === Iteration 21 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:31,548 INFO L82 PathProgramCache]: Analyzing trace with hash 197511793, now seen corresponding path program 1 times [2019-11-15 20:46:31,548 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:31,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868123682] [2019-11-15 20:46:31,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:31,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:31,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-15 20:46:31,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868123682] [2019-11-15 20:46:31,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182432390] [2019-11-15 20:46:31,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:32,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:46:32,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-15 20:46:32,123 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:32,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 15 [2019-11-15 20:46:32,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380719852] [2019-11-15 20:46:32,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 20:46:32,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:32,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 20:46:32,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:46:32,124 INFO L87 Difference]: Start difference. First operand 1334 states and 1780 transitions. Second operand 15 states. [2019-11-15 20:46:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:33,349 INFO L93 Difference]: Finished difference Result 2284 states and 3228 transitions. [2019-11-15 20:46:33,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-15 20:46:33,350 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2019-11-15 20:46:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:33,363 INFO L225 Difference]: With dead ends: 2284 [2019-11-15 20:46:33,364 INFO L226 Difference]: Without dead ends: 2218 [2019-11-15 20:46:33,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2019-11-15 20:46:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2019-11-15 20:46:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1748. [2019-11-15 20:46:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2019-11-15 20:46:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2366 transitions. [2019-11-15 20:46:33,425 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2366 transitions. Word has length 60 [2019-11-15 20:46:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:33,426 INFO L462 AbstractCegarLoop]: Abstraction has 1748 states and 2366 transitions. [2019-11-15 20:46:33,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 20:46:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2366 transitions. [2019-11-15 20:46:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-15 20:46:33,428 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:33,429 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:33,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:33,633 INFO L410 AbstractCegarLoop]: === Iteration 22 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1936947262, now seen corresponding path program 1 times [2019-11-15 20:46:33,634 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:33,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824694830] [2019-11-15 20:46:33,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:33,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:33,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-15 20:46:34,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824694830] [2019-11-15 20:46:34,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367070542] [2019-11-15 20:46:34,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:34,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 20:46:34,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:34,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 20:46:34,355 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:34,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 20 [2019-11-15 20:46:34,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448134687] [2019-11-15 20:46:34,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-15 20:46:34,356 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:34,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-15 20:46:34,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2019-11-15 20:46:34,357 INFO L87 Difference]: Start difference. First operand 1748 states and 2366 transitions. Second operand 20 states. [2019-11-15 20:46:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:38,053 INFO L93 Difference]: Finished difference Result 3382 states and 4747 transitions. [2019-11-15 20:46:38,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2019-11-15 20:46:38,053 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2019-11-15 20:46:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:38,074 INFO L225 Difference]: With dead ends: 3382 [2019-11-15 20:46:38,075 INFO L226 Difference]: Without dead ends: 3316 [2019-11-15 20:46:38,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4078 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1591, Invalid=9121, Unknown=0, NotChecked=0, Total=10712 [2019-11-15 20:46:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2019-11-15 20:46:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2087. [2019-11-15 20:46:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2019-11-15 20:46:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2832 transitions. [2019-11-15 20:46:38,160 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2832 transitions. Word has length 64 [2019-11-15 20:46:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:38,160 INFO L462 AbstractCegarLoop]: Abstraction has 2087 states and 2832 transitions. [2019-11-15 20:46:38,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-15 20:46:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2832 transitions. [2019-11-15 20:46:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-15 20:46:38,163 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:38,163 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:38,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:38,368 INFO L410 AbstractCegarLoop]: === Iteration 23 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:38,368 INFO L82 PathProgramCache]: Analyzing trace with hash 503876434, now seen corresponding path program 1 times [2019-11-15 20:46:38,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:38,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719653462] [2019-11-15 20:46:38,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:38,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:38,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-15 20:46:38,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719653462] [2019-11-15 20:46:38,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020319035] [2019-11-15 20:46:38,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:38,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:46:38,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-15 20:46:38,938 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:38,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-11-15 20:46:38,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855250895] [2019-11-15 20:46:38,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 20:46:38,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:38,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 20:46:38,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:46:38,940 INFO L87 Difference]: Start difference. First operand 2087 states and 2832 transitions. Second operand 12 states. [2019-11-15 20:46:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:39,625 INFO L93 Difference]: Finished difference Result 2832 states and 4030 transitions. [2019-11-15 20:46:39,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 20:46:39,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2019-11-15 20:46:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:39,638 INFO L225 Difference]: With dead ends: 2832 [2019-11-15 20:46:39,638 INFO L226 Difference]: Without dead ends: 2832 [2019-11-15 20:46:39,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2019-11-15 20:46:39,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2019-11-15 20:46:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2087. [2019-11-15 20:46:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2019-11-15 20:46:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2832 transitions. [2019-11-15 20:46:39,708 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2832 transitions. Word has length 71 [2019-11-15 20:46:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:39,709 INFO L462 AbstractCegarLoop]: Abstraction has 2087 states and 2832 transitions. [2019-11-15 20:46:39,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 20:46:39,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2832 transitions. [2019-11-15 20:46:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-15 20:46:39,711 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:39,712 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:39,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:39,915 INFO L410 AbstractCegarLoop]: === Iteration 24 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:39,916 INFO L82 PathProgramCache]: Analyzing trace with hash -15822214, now seen corresponding path program 1 times [2019-11-15 20:46:39,916 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:39,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790453054] [2019-11-15 20:46:39,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:39,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:39,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 61 proven. 17 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-15 20:46:40,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790453054] [2019-11-15 20:46:40,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253182504] [2019-11-15 20:46:40,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:40,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:46:40,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 87 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-15 20:46:40,442 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:40,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-11-15 20:46:40,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203402507] [2019-11-15 20:46:40,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 20:46:40,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:40,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 20:46:40,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:46:40,444 INFO L87 Difference]: Start difference. First operand 2087 states and 2832 transitions. Second operand 12 states. [2019-11-15 20:46:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:41,188 INFO L93 Difference]: Finished difference Result 2654 states and 3665 transitions. [2019-11-15 20:46:41,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 20:46:41,192 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2019-11-15 20:46:41,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:41,204 INFO L225 Difference]: With dead ends: 2654 [2019-11-15 20:46:41,204 INFO L226 Difference]: Without dead ends: 2654 [2019-11-15 20:46:41,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-11-15 20:46:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2019-11-15 20:46:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2375. [2019-11-15 20:46:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2019-11-15 20:46:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3274 transitions. [2019-11-15 20:46:41,268 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3274 transitions. Word has length 72 [2019-11-15 20:46:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:41,269 INFO L462 AbstractCegarLoop]: Abstraction has 2375 states and 3274 transitions. [2019-11-15 20:46:41,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 20:46:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3274 transitions. [2019-11-15 20:46:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-15 20:46:41,272 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:41,272 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:41,477 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:41,477 INFO L410 AbstractCegarLoop]: === Iteration 25 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:41,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1454542435, now seen corresponding path program 1 times [2019-11-15 20:46:41,478 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:41,478 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807022183] [2019-11-15 20:46:41,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:41,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:41,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 68 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-15 20:46:41,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807022183] [2019-11-15 20:46:41,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892377137] [2019-11-15 20:46:41,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:41,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-15 20:46:41,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 72 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-15 20:46:42,049 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:42,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2019-11-15 20:46:42,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643976748] [2019-11-15 20:46:42,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 20:46:42,050 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:42,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 20:46:42,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:46:42,051 INFO L87 Difference]: Start difference. First operand 2375 states and 3274 transitions. Second operand 15 states. [2019-11-15 20:46:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:43,126 INFO L93 Difference]: Finished difference Result 3409 states and 4849 transitions. [2019-11-15 20:46:43,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-15 20:46:43,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2019-11-15 20:46:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:43,138 INFO L225 Difference]: With dead ends: 3409 [2019-11-15 20:46:43,138 INFO L226 Difference]: Without dead ends: 3364 [2019-11-15 20:46:43,139 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2019-11-15 20:46:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2019-11-15 20:46:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 2516. [2019-11-15 20:46:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2019-11-15 20:46:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3448 transitions. [2019-11-15 20:46:43,209 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3448 transitions. Word has length 73 [2019-11-15 20:46:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:43,210 INFO L462 AbstractCegarLoop]: Abstraction has 2516 states and 3448 transitions. [2019-11-15 20:46:43,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 20:46:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3448 transitions. [2019-11-15 20:46:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-15 20:46:43,213 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:43,213 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:43,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:43,417 INFO L410 AbstractCegarLoop]: === Iteration 26 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:43,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:43,418 INFO L82 PathProgramCache]: Analyzing trace with hash 555479367, now seen corresponding path program 1 times [2019-11-15 20:46:43,418 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:43,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246012370] [2019-11-15 20:46:43,418 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:43,418 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:43,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 62 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-15 20:46:43,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246012370] [2019-11-15 20:46:43,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833830700] [2019-11-15 20:46:43,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:43,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-15 20:46:43,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 91 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-15 20:46:44,014 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:44,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2019-11-15 20:46:44,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450694098] [2019-11-15 20:46:44,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 20:46:44,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:44,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 20:46:44,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:46:44,016 INFO L87 Difference]: Start difference. First operand 2516 states and 3448 transitions. Second operand 15 states. [2019-11-15 20:46:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:45,315 INFO L93 Difference]: Finished difference Result 3409 states and 4759 transitions. [2019-11-15 20:46:45,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-15 20:46:45,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2019-11-15 20:46:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:45,325 INFO L225 Difference]: With dead ends: 3409 [2019-11-15 20:46:45,326 INFO L226 Difference]: Without dead ends: 3409 [2019-11-15 20:46:45,326 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2019-11-15 20:46:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2019-11-15 20:46:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3098. [2019-11-15 20:46:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3098 states. [2019-11-15 20:46:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4311 transitions. [2019-11-15 20:46:45,401 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4311 transitions. Word has length 76 [2019-11-15 20:46:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:45,401 INFO L462 AbstractCegarLoop]: Abstraction has 3098 states and 4311 transitions. [2019-11-15 20:46:45,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 20:46:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4311 transitions. [2019-11-15 20:46:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-15 20:46:45,405 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:45,405 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:45,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:45,610 INFO L410 AbstractCegarLoop]: === Iteration 27 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:45,610 INFO L82 PathProgramCache]: Analyzing trace with hash -924062608, now seen corresponding path program 1 times [2019-11-15 20:46:45,610 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:45,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595899471] [2019-11-15 20:46:45,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:45,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:45,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 59 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-15 20:46:45,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595899471] [2019-11-15 20:46:45,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117217592] [2019-11-15 20:46:45,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:46,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 20:46:46,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 63 proven. 43 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-15 20:46:46,397 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:46,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 16 [2019-11-15 20:46:46,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085077387] [2019-11-15 20:46:46,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 20:46:46,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:46,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 20:46:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-11-15 20:46:46,400 INFO L87 Difference]: Start difference. First operand 3098 states and 4311 transitions. Second operand 16 states. [2019-11-15 20:46:47,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:47,777 INFO L93 Difference]: Finished difference Result 4414 states and 6289 transitions. [2019-11-15 20:46:47,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-15 20:46:47,780 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2019-11-15 20:46:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:47,795 INFO L225 Difference]: With dead ends: 4414 [2019-11-15 20:46:47,795 INFO L226 Difference]: Without dead ends: 4369 [2019-11-15 20:46:47,796 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=388, Invalid=1418, Unknown=0, NotChecked=0, Total=1806 [2019-11-15 20:46:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2019-11-15 20:46:47,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3209. [2019-11-15 20:46:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3209 states. [2019-11-15 20:46:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 4440 transitions. [2019-11-15 20:46:47,887 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 4440 transitions. Word has length 77 [2019-11-15 20:46:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:47,887 INFO L462 AbstractCegarLoop]: Abstraction has 3209 states and 4440 transitions. [2019-11-15 20:46:47,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 20:46:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 4440 transitions. [2019-11-15 20:46:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-15 20:46:47,891 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:47,891 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:48,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:48,096 INFO L410 AbstractCegarLoop]: === Iteration 28 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:48,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1149758616, now seen corresponding path program 1 times [2019-11-15 20:46:48,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:48,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675138309] [2019-11-15 20:46:48,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:48,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:48,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 20:46:48,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675138309] [2019-11-15 20:46:48,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569773865] [2019-11-15 20:46:48,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:48,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-15 20:46:48,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:48,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 80 proven. 38 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 20:46:48,761 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:48,761 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 18 [2019-11-15 20:46:48,761 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785747052] [2019-11-15 20:46:48,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 20:46:48,762 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:48,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 20:46:48,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-11-15 20:46:48,763 INFO L87 Difference]: Start difference. First operand 3209 states and 4440 transitions. Second operand 18 states. [2019-11-15 20:46:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:52,461 INFO L93 Difference]: Finished difference Result 4342 states and 6112 transitions. [2019-11-15 20:46:52,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-11-15 20:46:52,462 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-11-15 20:46:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:52,475 INFO L225 Difference]: With dead ends: 4342 [2019-11-15 20:46:52,476 INFO L226 Difference]: Without dead ends: 4342 [2019-11-15 20:46:52,479 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1382, Invalid=7360, Unknown=0, NotChecked=0, Total=8742 [2019-11-15 20:46:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2019-11-15 20:46:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 3407. [2019-11-15 20:46:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3407 states. [2019-11-15 20:46:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4777 transitions. [2019-11-15 20:46:52,576 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4777 transitions. Word has length 80 [2019-11-15 20:46:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:52,576 INFO L462 AbstractCegarLoop]: Abstraction has 3407 states and 4777 transitions. [2019-11-15 20:46:52,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 20:46:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4777 transitions. [2019-11-15 20:46:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-15 20:46:52,582 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:52,583 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:52,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:52,787 INFO L410 AbstractCegarLoop]: === Iteration 29 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash 318724927, now seen corresponding path program 1 times [2019-11-15 20:46:52,788 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:52,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782075351] [2019-11-15 20:46:52,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:52,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:52,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-15 20:46:53,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782075351] [2019-11-15 20:46:53,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786562630] [2019-11-15 20:46:53,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:53,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-15 20:46:53,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:53,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:46:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-15 20:46:53,560 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:46:53,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 19 [2019-11-15 20:46:53,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684954208] [2019-11-15 20:46:53,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-15 20:46:53,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:46:53,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-15 20:46:53,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-15 20:46:53,562 INFO L87 Difference]: Start difference. First operand 3407 states and 4777 transitions. Second operand 19 states. [2019-11-15 20:46:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:46:57,712 INFO L93 Difference]: Finished difference Result 6183 states and 8762 transitions. [2019-11-15 20:46:57,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2019-11-15 20:46:57,713 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2019-11-15 20:46:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:46:57,730 INFO L225 Difference]: With dead ends: 6183 [2019-11-15 20:46:57,730 INFO L226 Difference]: Without dead ends: 6138 [2019-11-15 20:46:57,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1899, Invalid=10533, Unknown=0, NotChecked=0, Total=12432 [2019-11-15 20:46:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2019-11-15 20:46:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 3563. [2019-11-15 20:46:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3563 states. [2019-11-15 20:46:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4936 transitions. [2019-11-15 20:46:57,851 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4936 transitions. Word has length 81 [2019-11-15 20:46:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:46:57,852 INFO L462 AbstractCegarLoop]: Abstraction has 3563 states and 4936 transitions. [2019-11-15 20:46:57,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-15 20:46:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4936 transitions. [2019-11-15 20:46:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 20:46:57,856 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:46:57,856 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:46:58,060 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:46:58,061 INFO L410 AbstractCegarLoop]: === Iteration 30 === [popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr6REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION]=== [2019-11-15 20:46:58,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:58,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1037547235, now seen corresponding path program 1 times [2019-11-15 20:46:58,061 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:58,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60188627] [2019-11-15 20:46:58,062 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:58,062 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:58,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:58,228 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:46:58,228 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:46:58,288 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-15 20:46:58,315 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,317 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,318 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,322 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,326 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,329 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,338 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,343 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,344 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,345 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,349 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-11-15 20:46:58,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:46:58 BoogieIcfgContainer [2019-11-15 20:46:58,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:46:58,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:46:58,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:46:58,370 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:46:58,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:46:04" (3/4) ... [2019-11-15 20:46:58,382 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 20:46:58,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:46:58,383 INFO L168 Benchmark]: Toolchain (without parser) took 55954.59 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 625.5 MB). Free memory was 944.7 MB in the beginning and 941.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 629.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:58,384 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:46:58,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:58,385 INFO L168 Benchmark]: Boogie Preprocessor took 98.78 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:58,387 INFO L168 Benchmark]: RCFGBuilder took 960.49 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:58,387 INFO L168 Benchmark]: TraceAbstraction took 54115.73 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 493.4 MB). Free memory was 1.1 GB in the beginning and 941.2 MB in the end (delta: 113.4 MB). Peak memory consumption was 606.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:58,388 INFO L168 Benchmark]: Witness Printer took 12.65 ms. Allocated memory is still 1.7 GB. Free memory is still 941.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:46:58,390 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 758.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 98.78 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 960.49 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 54115.73 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 493.4 MB). Free memory was 1.1 GB in the beginning and 941.2 MB in the end (delta: 113.4 MB). Peak memory consumption was 606.8 MB. Max. memory is 11.5 GB. * Witness Printer took 12.65 ms. Allocated memory is still 1.7 GB. Free memory is still 941.2 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch3 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 581]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 581. Possible FailurePath: [L517] struct cell *S; [L518] int pc1 = 1; [L519] int pc4 = 1; [L520] static struct cell *t1 = ((void *)0); [L521] static struct cell *x1 = ((void *)0); [L550] struct cell* garbage; [L551] static struct cell *t4 = ((void *)0); [L552] static struct cell *x4 = ((void *)0); [L555] static int res4; VAL [\old(garbage)=18, \old(garbage)=22, \old(pc1)=13, \old(pc4)=23, \old(res4)=14, \old(S)=15, \old(S)=10, \old(t1)=30, \old(t1)=21, \old(t4)=11, \old(t4)=16, \old(x1)=20, \old(x1)=24, \old(x4)=29, \old(x4)=28, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() VAL [1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()=1, \old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L583] COND TRUE 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L585] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L524] pc1++ [L525] case 1: [L526] x1 = malloc(sizeof(*x1)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, malloc(sizeof(*x1))={-1:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L527] x1->data = 0 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, malloc(sizeof(*x1))={-1:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L528] x1->next = ((void *)0) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, malloc(sizeof(*x1))={-1:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L585] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() VAL [1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()=1, \old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] COND TRUE 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L585] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=2, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=-1, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L524] pc1++ [L525] case 1: [L530] case 2: VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=2, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=-1, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L531] x1->data = 4 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=2, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=-1, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L585] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=3, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() VAL [1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()=1, \old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=3, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] COND TRUE 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L585] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=3, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=-1, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=3, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L524] pc1++ [L525] case 1: [L530] case 2: [L533] case 3: [L534] t1 = S VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=3, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=-1, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=4, pc1++=3, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L585] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() VAL [1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()=1, \old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] COND TRUE 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L585] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=4, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=-1, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L524] pc1++ [L525] case 1: [L530] case 2: [L533] case 3: [L536] case 4: VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=4, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=-1, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L537] x1->next = t1 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=4, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=-1, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L585] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=5, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() VAL [1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()=1, \old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=5, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] COND TRUE 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L585] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=5, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=-1, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=5, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L524] pc1++ [L525] case 1: [L530] case 2: [L533] case 3: [L536] case 4: [L539] case 5: VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=5, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=-1, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L540] COND TRUE S == t1 [L541] S = x1 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=5, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=-1, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L585] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=6, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() VAL [1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()=1, \old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=6, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] COND TRUE 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L585] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=6, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=-1, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=-1, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=6, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L524] pc1++ [L525] case 1: [L530] case 2: [L533] case 3: [L536] case 4: [L539] case 5: [L545] case 6: [L546] pc1 = 1 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=6, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=-1, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=-1, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc1++=6, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L585] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() [L583] 1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int() VAL [1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()=0, \old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L583] COND FALSE !(1 != pc1 || 1 != pc4 || __VERIFIER_nondet_int()) [L589] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={-1:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] S = ((void *)0) [L595] t1 = ((void *)0) [L596] x1 = ((void *)0) [L597] t4 = ((void *)0) [L598] x4 = ((void *)0) [L599] return !!garbage; VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, \result=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 89 locations, 20 error locations. Result: UNSAFE, OverallTime: 54.0s, OverallIterations: 30, TraceHistogramMax: 7, AutomataDifference: 35.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2366 SDtfs, 7033 SDslu, 4976 SDs, 0 SdLazy, 14398 SolverSat, 2990 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2186 GetRequests, 1362 SyntacticMatches, 28 SemanticMatches, 796 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16790 ImplicationChecksByTransitivity, 21.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3563occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 29 MinimizatonAttempts, 13017 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 2309 NumberOfCodeBlocks, 2309 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 2176 ConstructedInterpolants, 0 QuantifiedInterpolants, 550186 SizeOfPredicates, 85 NumberOfNonLiveVariables, 8618 ConjunctsInSsa, 247 ConjunctsInUnsatCore, 48 InterpolantComputations, 12 PerfectInterpolantSequences, 1909/2576 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 0.1.24-cad4683 [2019-11-15 20:47:00,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:47:00,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:47:00,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:47:00,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:47:00,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:47:00,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:47:00,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:47:00,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:47:00,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:47:00,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:47:00,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:47:00,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:47:00,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:47:00,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:47:00,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:47:00,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:47:00,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:47:00,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:47:00,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:47:00,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:47:00,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:47:00,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:47:00,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:47:00,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:47:00,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:47:00,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:47:00,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:47:00,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:47:00,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:47:00,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:47:00,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:47:00,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:47:00,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:47:00,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:47:00,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:47:00,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:47:00,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:47:00,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:47:00,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:47:00,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:47:00,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-15 20:47:00,891 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:47:00,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:47:00,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:47:00,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:47:00,893 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:47:00,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:47:00,894 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:47:00,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:47:00,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:47:00,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:47:00,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:47:00,895 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 20:47:00,895 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 20:47:00,896 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 20:47:00,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:47:00,896 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 20:47:00,896 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 20:47:00,897 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:47:00,897 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:47:00,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:47:00,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:47:00,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:47:00,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:47:00,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:47:00,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:47:00,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:47:00,899 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 20:47:00,899 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 20:47:00,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 20:47:00,900 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_0c842c02-631b-4eb7-b870-608e0239deda/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 -> c1eee0363564b6d4551a57eb6d1fbf96320d9c79 [2019-11-15 20:47:00,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:47:00,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:47:00,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:47:00,951 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:47:00,952 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:47:00,952 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/../../sv-benchmarks/c/memsafety/lockfree-3.1.i [2019-11-15 20:47:01,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/327736608/93fa4c58fd9741be86170b1ad0007184/FLAG02c723ba5 [2019-11-15 20:47:01,551 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:47:01,552 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/sv-benchmarks/c/memsafety/lockfree-3.1.i [2019-11-15 20:47:01,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/327736608/93fa4c58fd9741be86170b1ad0007184/FLAG02c723ba5 [2019-11-15 20:47:01,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/data/327736608/93fa4c58fd9741be86170b1ad0007184 [2019-11-15 20:47:01,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:47:01,827 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 20:47:01,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:47:01,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:47:01,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:47:01,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:47:01" (1/1) ... [2019-11-15 20:47:01,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40707d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:01, skipping insertion in model container [2019-11-15 20:47:01,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:47:01" (1/1) ... [2019-11-15 20:47:01,844 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:47:01,894 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:47:02,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:47:02,367 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:47:02,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:47:02,517 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:47:02,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02 WrapperNode [2019-11-15 20:47:02,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:47:02,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:47:02,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:47:02,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:47:02,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... [2019-11-15 20:47:02,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... [2019-11-15 20:47:02,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... [2019-11-15 20:47:02,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... [2019-11-15 20:47:02,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... [2019-11-15 20:47:02,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... [2019-11-15 20:47:02,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... [2019-11-15 20:47:02,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:47:02,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:47:02,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:47:02,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:47:02,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/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 [2019-11-15 20:47:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 20:47:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:47:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 20:47:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 20:47:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 20:47:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 20:47:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 20:47:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2019-11-15 20:47:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2019-11-15 20:47:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 20:47:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-15 20:47:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 20:47:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 20:47:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 20:47:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 20:47:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 20:47:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 20:47:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 20:47:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 20:47:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 20:47:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 20:47:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 20:47:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 20:47:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 20:47:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 20:47:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 20:47:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 20:47:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 20:47:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 20:47:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 20:47:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 20:47:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 20:47:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 20:47:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 20:47:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 20:47:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 20:47:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 20:47:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 20:47:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 20:47:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 20:47:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 20:47:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 20:47:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 20:47:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 20:47:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 20:47:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 20:47:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 20:47:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 20:47:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 20:47:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 20:47:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 20:47:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 20:47:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 20:47:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 20:47:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 20:47:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 20:47:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 20:47:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 20:47:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 20:47:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 20:47:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 20:47:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 20:47:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 20:47:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 20:47:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 20:47:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 20:47:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 20:47:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 20:47:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 20:47:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 20:47:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 20:47:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 20:47:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 20:47:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 20:47:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 20:47:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 20:47:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 20:47:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 20:47:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 20:47:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 20:47:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 20:47:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 20:47:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 20:47:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 20:47:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 20:47:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 20:47:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 20:47:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 20:47:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 20:47:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 20:47:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 20:47:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 20:47:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 20:47:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 20:47:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 20:47:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 20:47:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 20:47:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 20:47:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 20:47:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 20:47:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 20:47:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 20:47:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 20:47:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 20:47:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 20:47:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 20:47:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 20:47:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 20:47:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 20:47:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 20:47:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 20:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 20:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 20:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 20:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 20:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 20:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 20:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 20:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 20:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure push [2019-11-15 20:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 20:47:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 20:47:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 20:47:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2019-11-15 20:47:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 20:47:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 20:47:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 20:47:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:47:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 20:47:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:47:03,523 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:47:03,524 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 20:47:03,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:47:03 BoogieIcfgContainer [2019-11-15 20:47:03,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:47:03,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:47:03,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:47:03,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:47:03,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:47:01" (1/3) ... [2019-11-15 20:47:03,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2add8fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:47:03, skipping insertion in model container [2019-11-15 20:47:03,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:02" (2/3) ... [2019-11-15 20:47:03,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2add8fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:47:03, skipping insertion in model container [2019-11-15 20:47:03,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:47:03" (3/3) ... [2019-11-15 20:47:03,534 INFO L109 eAbstractionObserver]: Analyzing ICFG lockfree-3.1.i [2019-11-15 20:47:03,548 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:47:03,555 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-11-15 20:47:03,567 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-11-15 20:47:03,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:47:03,592 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 20:47:03,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:47:03,593 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:47:03,593 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:47:03,593 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:47:03,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:47:03,593 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:47:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2019-11-15 20:47:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:47:03,617 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:03,619 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:03,621 INFO L410 AbstractCegarLoop]: === Iteration 1 === [popErr1REQUIRES_VIOLATION, popErr0REQUIRES_VIOLATION, popErr5REQUIRES_VIOLATION, popErr4REQUIRES_VIOLATION, popErr3REQUIRES_VIOLATION, popErr2REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr3ASSERT_VIOLATIONMEMORY_FREE, pushErr6REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr0REQUIRES_VIOLATION, pushErr5REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr7REQUIRES_VIOLATION]=== [2019-11-15 20:47:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:03,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1085435516, now seen corresponding path program 1 times [2019-11-15 20:47:03,634 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:47:03,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [929904015] [2019-11-15 20:47:03,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c842c02-631b-4eb7-b870-608e0239deda/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:47:03,873 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:47:03,874 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Sort C_DOUBLE not declared at de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.sort(WrapperScript.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.NonDeclaringTermTransferrer.transferSort(NonDeclaringTermTransferrer.java:111) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.DeclarableFunctionSymbol.defineOrDeclare(DeclarableFunctionSymbol.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.SmtFunctionsAndAxioms.transferSymbols(SmtFunctionsAndAxioms.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.createExternalManagedScript(IpTcStrategyModuleTraceCheck.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 20:47:03,879 INFO L168 Benchmark]: Toolchain (without parser) took 2051.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -108.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:03,880 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:47:03,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:03,881 INFO L168 Benchmark]: Boogie Preprocessor took 86.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:47:03,885 INFO L168 Benchmark]: RCFGBuilder took 918.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:03,887 INFO L168 Benchmark]: TraceAbstraction took 350.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:03,893 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 691.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 86.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 918.48 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: 58.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 350.20 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Sort C_DOUBLE not declared de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Sort C_DOUBLE not declared: de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...