./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ed568caba4b883b0886336a3869d78e2ca18840 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ed568caba4b883b0886336a3869d78e2ca18840 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:19:40,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:19:40,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:19:40,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:19:40,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:19:40,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:19:40,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:19:40,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:19:40,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:19:40,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:19:40,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:19:40,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:19:40,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:19:40,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:19:40,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:19:40,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:19:40,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:19:40,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:19:40,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:19:40,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:19:40,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:19:40,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:19:40,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:19:40,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:19:40,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:19:40,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:19:40,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:19:40,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:19:40,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:19:40,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:19:40,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:19:40,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:19:40,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:19:40,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:19:40,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:19:40,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:19:40,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:19:40,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:19:40,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:19:40,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:19:40,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:19:40,804 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:19:40,819 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:19:40,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:19:40,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:19:40,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:19:40,821 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:19:40,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:19:40,822 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:19:40,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:19:40,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:19:40,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:19:40,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:19:40,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:19:40,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:19:40,824 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:19:40,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:19:40,824 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:19:40,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:19:40,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:19:40,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:19:40,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:19:40,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:19:40,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:19:40,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:19:40,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:19:40,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:19:40,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:19:40,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:19:40,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:19:40,828 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_373ceaf5-1055-409f-9b0b-b6855f185a34/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 ! call(__VERIFIER_error())) ) 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 -> 1ed568caba4b883b0886336a3869d78e2ca18840 [2019-11-15 23:19:40,859 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:19:40,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:19:40,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:19:40,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:19:40,884 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:19:40,885 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longest-1.i [2019-11-15 23:19:40,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/b9c5add7f/5036ad822d784bc7ad3b14882bb0ec8b/FLAG43a1ccebb [2019-11-15 23:19:41,477 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:19:41,477 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/sv-benchmarks/c/pthread/stack_longest-1.i [2019-11-15 23:19:41,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/b9c5add7f/5036ad822d784bc7ad3b14882bb0ec8b/FLAG43a1ccebb [2019-11-15 23:19:41,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/b9c5add7f/5036ad822d784bc7ad3b14882bb0ec8b [2019-11-15 23:19:41,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:19:41,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:19:41,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:19:41,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:19:41,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:19:41,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:19:41" (1/1) ... [2019-11-15 23:19:41,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa2f979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:41, skipping insertion in model container [2019-11-15 23:19:41,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:19:41" (1/1) ... [2019-11-15 23:19:41,714 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:19:41,777 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:19:42,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:19:42,358 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:19:42,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:19:42,591 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:19:42,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42 WrapperNode [2019-11-15 23:19:42,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:19:42,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:19:42,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:19:42,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:19:42,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:19:42,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:19:42,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:19:42,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:19:42,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... [2019-11-15 23:19:42,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:19:42,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:19:42,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:19:42,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:19:42,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/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 23:19:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 23:19:42,819 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 23:19:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 23:19:42,820 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 23:19:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:19:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:19:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:19:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:19:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 23:19:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 23:19:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:19:42,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:19:42,828 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 23:19:43,478 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:19:43,479 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-15 23:19:43,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:19:43 BoogieIcfgContainer [2019-11-15 23:19:43,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:19:43,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:19:43,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:19:43,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:19:43,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:19:41" (1/3) ... [2019-11-15 23:19:43,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54af4feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:19:43, skipping insertion in model container [2019-11-15 23:19:43,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:42" (2/3) ... [2019-11-15 23:19:43,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54af4feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:19:43, skipping insertion in model container [2019-11-15 23:19:43,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:19:43" (3/3) ... [2019-11-15 23:19:43,488 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2019-11-15 23:19:43,529 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,529 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,530 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,530 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,530 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,530 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,531 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,531 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,531 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,531 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,531 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,532 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,532 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,532 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,532 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,533 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,533 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,533 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,533 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,533 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,534 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,534 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,534 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,534 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,535 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,535 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,535 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,535 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,535 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,535 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,536 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,536 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,536 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,536 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,538 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,538 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,538 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,538 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,538 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,539 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,539 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,539 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,539 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,539 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,540 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,540 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,540 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,540 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,540 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,541 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,541 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,541 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,541 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,541 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,542 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,542 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,542 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,543 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,543 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,543 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,543 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,544 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,544 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,544 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,544 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,545 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,545 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,545 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,545 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,545 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,546 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,546 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,546 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,546 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,547 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,547 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,547 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,547 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,547 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,547 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,548 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,548 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,548 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,548 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,548 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,548 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,549 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,549 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,549 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,549 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,549 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,550 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,550 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,550 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,550 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,551 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,551 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,551 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,551 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,552 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,552 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,552 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,552 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,552 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,553 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,553 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,553 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,553 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,554 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,554 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,554 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,554 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,554 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,555 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,555 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,555 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,555 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,555 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,556 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,556 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,556 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,556 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:43,575 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 23:19:43,575 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:19:43,585 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:19:43,597 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:19:43,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:19:43,616 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:19:43,616 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:19:43,616 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:19:43,616 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:19:43,616 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:19:43,617 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:19:43,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:19:43,631 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 137 transitions [2019-11-15 23:19:43,979 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6504 states. [2019-11-15 23:19:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states. [2019-11-15 23:19:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-15 23:19:44,025 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:44,026 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:44,028 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:44,034 INFO L82 PathProgramCache]: Analyzing trace with hash -296780314, now seen corresponding path program 1 times [2019-11-15 23:19:44,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:19:44,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516339347] [2019-11-15 23:19:44,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:44,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:44,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:19:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:44,480 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 23:19:44,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516339347] [2019-11-15 23:19:44,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:44,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:19:44,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312314422] [2019-11-15 23:19:44,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:19:44,487 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:19:44,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:19:44,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:19:44,506 INFO L87 Difference]: Start difference. First operand 6504 states. Second operand 3 states. [2019-11-15 23:19:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:44,727 INFO L93 Difference]: Finished difference Result 9852 states and 26351 transitions. [2019-11-15 23:19:44,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:19:44,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-11-15 23:19:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:44,851 INFO L225 Difference]: With dead ends: 9852 [2019-11-15 23:19:44,851 INFO L226 Difference]: Without dead ends: 9744 [2019-11-15 23:19:44,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:19:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9744 states. [2019-11-15 23:19:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9744 to 8274. [2019-11-15 23:19:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8274 states. [2019-11-15 23:19:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 22332 transitions. [2019-11-15 23:19:45,483 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 22332 transitions. Word has length 44 [2019-11-15 23:19:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:45,484 INFO L462 AbstractCegarLoop]: Abstraction has 8274 states and 22332 transitions. [2019-11-15 23:19:45,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:19:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 22332 transitions. [2019-11-15 23:19:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-15 23:19:45,491 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:45,492 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:45,492 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1811968484, now seen corresponding path program 1 times [2019-11-15 23:19:45,493 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:19:45,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752718756] [2019-11-15 23:19:45,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:45,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:45,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:19:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:45,622 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 23:19:45,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752718756] [2019-11-15 23:19:45,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:45,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:19:45,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876604024] [2019-11-15 23:19:45,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:19:45,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:19:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:19:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:19:45,627 INFO L87 Difference]: Start difference. First operand 8274 states and 22332 transitions. Second operand 3 states. [2019-11-15 23:19:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:45,708 INFO L93 Difference]: Finished difference Result 7695 states and 20467 transitions. [2019-11-15 23:19:45,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:19:45,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-11-15 23:19:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:45,769 INFO L225 Difference]: With dead ends: 7695 [2019-11-15 23:19:45,770 INFO L226 Difference]: Without dead ends: 7554 [2019-11-15 23:19:45,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:19:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7554 states. [2019-11-15 23:19:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7554 to 7326. [2019-11-15 23:19:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7326 states. [2019-11-15 23:19:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 19606 transitions. [2019-11-15 23:19:46,022 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 19606 transitions. Word has length 48 [2019-11-15 23:19:46,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:46,024 INFO L462 AbstractCegarLoop]: Abstraction has 7326 states and 19606 transitions. [2019-11-15 23:19:46,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:19:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 19606 transitions. [2019-11-15 23:19:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-15 23:19:46,029 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:46,030 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:46,030 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:46,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1890235249, now seen corresponding path program 1 times [2019-11-15 23:19:46,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:19:46,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173224558] [2019-11-15 23:19:46,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:46,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:46,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:19:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:46,104 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 23:19:46,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173224558] [2019-11-15 23:19:46,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:46,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:19:46,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545199516] [2019-11-15 23:19:46,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:19:46,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:19:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:19:46,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:19:46,108 INFO L87 Difference]: Start difference. First operand 7326 states and 19606 transitions. Second operand 4 states. [2019-11-15 23:19:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:46,236 INFO L93 Difference]: Finished difference Result 10191 states and 27209 transitions. [2019-11-15 23:19:46,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:19:46,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-15 23:19:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:46,272 INFO L225 Difference]: With dead ends: 10191 [2019-11-15 23:19:46,272 INFO L226 Difference]: Without dead ends: 10191 [2019-11-15 23:19:46,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:19:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10191 states. [2019-11-15 23:19:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10191 to 7650. [2019-11-15 23:19:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7650 states. [2019-11-15 23:19:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7650 states to 7650 states and 20473 transitions. [2019-11-15 23:19:46,645 INFO L78 Accepts]: Start accepts. Automaton has 7650 states and 20473 transitions. Word has length 53 [2019-11-15 23:19:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:46,646 INFO L462 AbstractCegarLoop]: Abstraction has 7650 states and 20473 transitions. [2019-11-15 23:19:46,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:19:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 20473 transitions. [2019-11-15 23:19:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-15 23:19:46,655 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:46,656 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:46,656 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash -938425251, now seen corresponding path program 1 times [2019-11-15 23:19:46,657 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:19:46,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555085699] [2019-11-15 23:19:46,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:46,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:46,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:19:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:19:46,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555085699] [2019-11-15 23:19:46,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117610226] [2019-11-15 23:19:46,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/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 23:19:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:46,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:19:46,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:19:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:19:47,008 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:19:47,009 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-15 23:19:47,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740512036] [2019-11-15 23:19:47,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:19:47,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:19:47,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:19:47,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:19:47,011 INFO L87 Difference]: Start difference. First operand 7650 states and 20473 transitions. Second operand 7 states. [2019-11-15 23:19:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:47,180 INFO L93 Difference]: Finished difference Result 11184 states and 29817 transitions. [2019-11-15 23:19:47,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:19:47,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2019-11-15 23:19:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:47,214 INFO L225 Difference]: With dead ends: 11184 [2019-11-15 23:19:47,215 INFO L226 Difference]: Without dead ends: 11184 [2019-11-15 23:19:47,215 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:19:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11184 states. [2019-11-15 23:19:47,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11184 to 9714. [2019-11-15 23:19:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9714 states. [2019-11-15 23:19:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9714 states to 9714 states and 26034 transitions. [2019-11-15 23:19:47,553 INFO L78 Accepts]: Start accepts. Automaton has 9714 states and 26034 transitions. Word has length 76 [2019-11-15 23:19:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:47,555 INFO L462 AbstractCegarLoop]: Abstraction has 9714 states and 26034 transitions. [2019-11-15 23:19:47,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:19:47,556 INFO L276 IsEmpty]: Start isEmpty. Operand 9714 states and 26034 transitions. [2019-11-15 23:19:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-15 23:19:47,567 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:47,567 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:47,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:19:47,779 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:47,779 INFO L82 PathProgramCache]: Analyzing trace with hash 484820683, now seen corresponding path program 1 times [2019-11-15 23:19:47,779 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:19:47,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082428352] [2019-11-15 23:19:47,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:47,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:47,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:19:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:47,838 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 23:19:47,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082428352] [2019-11-15 23:19:47,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:47,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:19:47,844 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515440878] [2019-11-15 23:19:47,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:19:47,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:19:47,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:19:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:19:47,847 INFO L87 Difference]: Start difference. First operand 9714 states and 26034 transitions. Second operand 3 states. [2019-11-15 23:19:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:47,907 INFO L93 Difference]: Finished difference Result 4947 states and 12533 transitions. [2019-11-15 23:19:47,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:19:47,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-11-15 23:19:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:47,920 INFO L225 Difference]: With dead ends: 4947 [2019-11-15 23:19:47,921 INFO L226 Difference]: Without dead ends: 4947 [2019-11-15 23:19:47,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:19:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2019-11-15 23:19:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 4842. [2019-11-15 23:19:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2019-11-15 23:19:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 12268 transitions. [2019-11-15 23:19:48,035 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 12268 transitions. Word has length 80 [2019-11-15 23:19:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:48,036 INFO L462 AbstractCegarLoop]: Abstraction has 4842 states and 12268 transitions. [2019-11-15 23:19:48,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:19:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 12268 transitions. [2019-11-15 23:19:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-15 23:19:48,045 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:48,045 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:48,046 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:48,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:48,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1386182015, now seen corresponding path program 1 times [2019-11-15 23:19:48,047 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:19:48,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420351103] [2019-11-15 23:19:48,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:48,050 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:48,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:19:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:48,237 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 23:19:48,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420351103] [2019-11-15 23:19:48,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:48,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 23:19:48,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971514489] [2019-11-15 23:19:48,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:19:48,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:19:48,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:19:48,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:19:48,240 INFO L87 Difference]: Start difference. First operand 4842 states and 12268 transitions. Second operand 7 states. [2019-11-15 23:19:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:48,447 INFO L93 Difference]: Finished difference Result 6381 states and 16122 transitions. [2019-11-15 23:19:48,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:19:48,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2019-11-15 23:19:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:48,477 INFO L225 Difference]: With dead ends: 6381 [2019-11-15 23:19:48,477 INFO L226 Difference]: Without dead ends: 6381 [2019-11-15 23:19:48,477 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:19:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2019-11-15 23:19:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 5247. [2019-11-15 23:19:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5247 states. [2019-11-15 23:19:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 13262 transitions. [2019-11-15 23:19:48,703 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 13262 transitions. Word has length 81 [2019-11-15 23:19:48,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:48,704 INFO L462 AbstractCegarLoop]: Abstraction has 5247 states and 13262 transitions. [2019-11-15 23:19:48,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:19:48,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 13262 transitions. [2019-11-15 23:19:48,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-15 23:19:48,714 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:48,715 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:48,715 INFO L410 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:48,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:48,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1462622247, now seen corresponding path program 1 times [2019-11-15 23:19:48,716 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:19:48,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941417424] [2019-11-15 23:19:48,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:48,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:19:48,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:19:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:49,120 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.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:128) 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 23:19:49,125 INFO L168 Benchmark]: Toolchain (without parser) took 7424.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -127.4 MB). Peak memory consumption was 79.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:19:49,126 INFO L168 Benchmark]: CDTParser took 0.26 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 23:19:49,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 891.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -117.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:19:49,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:19:49,127 INFO L168 Benchmark]: Boogie Preprocessor took 38.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:19:49,128 INFO L168 Benchmark]: RCFGBuilder took 743.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:19:49,129 INFO L168 Benchmark]: TraceAbstraction took 5641.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -48.8 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:19:49,132 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 891.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -117.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 106.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 743.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5641.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -48.8 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:19:51,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:19:51,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:19:51,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:19:51,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:19:51,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:19:51,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:19:51,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:19:51,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:19:51,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:19:51,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:19:51,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:19:51,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:19:51,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:19:51,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:19:51,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:19:51,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:19:51,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:19:51,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:19:51,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:19:51,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:19:51,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:19:51,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:19:51,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:19:51,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-15 23:19:51,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:19:51,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:19:51,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:19:51,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:19:51,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:19:51,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:19:51,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:19:51,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:19:51,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:19:51,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:19:51,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:19:51,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:19:51,749 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:19:51,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:19:51,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:19:51,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:19:51,751 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:19:51,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:19:51,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:19:51,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:19:51,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:19:51,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:19:51,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:19:51,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:19:51,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:19:51,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:19:51,754 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:19:51,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:19:51,755 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:19:51,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:19:51,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:19:51,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:19:51,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:19:51,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:19:51,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:19:51,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:19:51,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:19:51,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:19:51,758 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:19:51,758 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:19:51,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:19:51,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:19:51,759 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_373ceaf5-1055-409f-9b0b-b6855f185a34/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 ! call(__VERIFIER_error())) ) 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 -> 1ed568caba4b883b0886336a3869d78e2ca18840 [2019-11-15 23:19:51,794 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:19:51,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:19:51,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:19:51,814 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:19:51,815 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:19:51,815 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longest-1.i [2019-11-15 23:19:51,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/e4fb4aa29/fd90d7bc90c24fbfbc29c539f170b640/FLAG116105e42 [2019-11-15 23:19:52,385 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:19:52,391 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/sv-benchmarks/c/pthread/stack_longest-1.i [2019-11-15 23:19:52,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/e4fb4aa29/fd90d7bc90c24fbfbc29c539f170b640/FLAG116105e42 [2019-11-15 23:19:52,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/data/e4fb4aa29/fd90d7bc90c24fbfbc29c539f170b640 [2019-11-15 23:19:52,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:19:52,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:19:52,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:19:52,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:19:52,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:19:52,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:19:52" (1/1) ... [2019-11-15 23:19:52,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e626e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:52, skipping insertion in model container [2019-11-15 23:19:52,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:19:52" (1/1) ... [2019-11-15 23:19:52,732 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:19:52,799 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:19:53,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:19:53,427 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:19:53,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:19:53,711 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:19:53,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53 WrapperNode [2019-11-15 23:19:53,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:19:53,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:19:53,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:19:53,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:19:53,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:19:53,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:19:53,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:19:53,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:19:53,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... [2019-11-15 23:19:53,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:19:53,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:19:53,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:19:53,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:19:53,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/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 23:19:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:19:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 23:19:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 23:19:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 23:19:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 23:19:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:19:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:19:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 23:19:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-15 23:19:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 23:19:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:19:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:19:53,986 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 23:19:54,602 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:19:54,602 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-15 23:19:54,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:19:54 BoogieIcfgContainer [2019-11-15 23:19:54,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:19:54,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:19:54,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:19:54,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:19:54,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:19:52" (1/3) ... [2019-11-15 23:19:54,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de95d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:19:54, skipping insertion in model container [2019-11-15 23:19:54,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:19:53" (2/3) ... [2019-11-15 23:19:54,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de95d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:19:54, skipping insertion in model container [2019-11-15 23:19:54,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:19:54" (3/3) ... [2019-11-15 23:19:54,613 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2019-11-15 23:19:54,661 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,662 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,662 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,662 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,662 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,663 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,663 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,663 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,664 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,664 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,664 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,664 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,665 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,665 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,665 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,666 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,666 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,666 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,666 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,667 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,667 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,667 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,667 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,668 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,668 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,668 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,668 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,669 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,669 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,669 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,669 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,670 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,670 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,670 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,670 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,671 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,671 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,671 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,672 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,672 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,672 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,672 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,673 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,673 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,673 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,673 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,674 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,674 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,674 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,675 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,675 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,675 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,676 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,676 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,676 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,676 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,677 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,677 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,677 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,677 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,678 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,679 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,679 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,679 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,679 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,680 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,680 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,680 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,681 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,681 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,681 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,681 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,682 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,682 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,682 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,683 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,683 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,683 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,683 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,684 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,684 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,684 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,684 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,685 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,685 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,685 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,685 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,686 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,686 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,686 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,687 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,687 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,687 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,688 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,688 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,688 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,688 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,689 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,689 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,689 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,690 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,690 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,690 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,690 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,691 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,691 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,691 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,692 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,692 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,692 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,692 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,693 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,693 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,693 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,694 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,694 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,694 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,694 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,695 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,695 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,695 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,695 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:19:54,736 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 23:19:54,736 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:19:54,744 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:19:54,753 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:19:54,773 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:19:54,773 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:19:54,773 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:19:54,774 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:19:54,774 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:19:54,774 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:19:54,774 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:19:54,775 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:19:54,789 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 124 places, 132 transitions [2019-11-15 23:19:55,105 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5829 states. [2019-11-15 23:19:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states. [2019-11-15 23:19:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 23:19:55,146 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:55,147 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:55,150 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash 185875913, now seen corresponding path program 1 times [2019-11-15 23:19:55,171 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:19:55,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2085018788] [2019-11-15 23:19:55,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/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 23:19:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:55,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:19:55,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:19:55,493 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 23:19:55,494 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:19:55,528 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 23:19:55,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2085018788] [2019-11-15 23:19:55,530 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:55,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:19:55,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392415820] [2019-11-15 23:19:55,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:19:55,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:19:55,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:19:55,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:19:55,557 INFO L87 Difference]: Start difference. First operand 5829 states. Second operand 4 states. [2019-11-15 23:19:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:55,794 INFO L93 Difference]: Finished difference Result 9876 states and 26442 transitions. [2019-11-15 23:19:55,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:19:55,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-11-15 23:19:55,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:55,921 INFO L225 Difference]: With dead ends: 9876 [2019-11-15 23:19:55,921 INFO L226 Difference]: Without dead ends: 9768 [2019-11-15 23:19:55,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 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 23:19:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2019-11-15 23:19:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 7503. [2019-11-15 23:19:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7503 states. [2019-11-15 23:19:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7503 states to 7503 states and 20263 transitions. [2019-11-15 23:19:56,418 INFO L78 Accepts]: Start accepts. Automaton has 7503 states and 20263 transitions. Word has length 43 [2019-11-15 23:19:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:56,419 INFO L462 AbstractCegarLoop]: Abstraction has 7503 states and 20263 transitions. [2019-11-15 23:19:56,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:19:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 7503 states and 20263 transitions. [2019-11-15 23:19:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-15 23:19:56,427 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:56,428 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:56,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:19:56,633 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1475000917, now seen corresponding path program 1 times [2019-11-15 23:19:56,635 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:19:56,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [344320166] [2019-11-15 23:19:56,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:19:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:56,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:19:56,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:19:56,911 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 23:19:56,914 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:19:56,928 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 23:19:56,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344320166] [2019-11-15 23:19:56,929 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:56,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:19:56,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475320976] [2019-11-15 23:19:56,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:19:56,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:19:56,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:19:56,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:19:56,934 INFO L87 Difference]: Start difference. First operand 7503 states and 20263 transitions. Second operand 3 states. [2019-11-15 23:19:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:57,019 INFO L93 Difference]: Finished difference Result 7608 states and 20260 transitions. [2019-11-15 23:19:57,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:19:57,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-15 23:19:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:57,091 INFO L225 Difference]: With dead ends: 7608 [2019-11-15 23:19:57,091 INFO L226 Difference]: Without dead ends: 7467 [2019-11-15 23:19:57,092 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 23:19:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7467 states. [2019-11-15 23:19:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7467 to 7047. [2019-11-15 23:19:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7047 states. [2019-11-15 23:19:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 18919 transitions. [2019-11-15 23:19:57,336 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 18919 transitions. Word has length 46 [2019-11-15 23:19:57,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:57,337 INFO L462 AbstractCegarLoop]: Abstraction has 7047 states and 18919 transitions. [2019-11-15 23:19:57,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:19:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 18919 transitions. [2019-11-15 23:19:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-15 23:19:57,341 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:57,342 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:57,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:19:57,547 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:57,548 INFO L82 PathProgramCache]: Analyzing trace with hash -948909643, now seen corresponding path program 1 times [2019-11-15 23:19:57,548 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:19:57,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1507151251] [2019-11-15 23:19:57,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:19:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:57,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:19:57,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:19:57,719 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 23:19:57,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:19:57,747 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 23:19:57,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1507151251] [2019-11-15 23:19:57,749 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:19:57,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:19:57,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478351055] [2019-11-15 23:19:57,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:19:57,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:19:57,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:19:57,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:19:57,757 INFO L87 Difference]: Start difference. First operand 7047 states and 18919 transitions. Second operand 6 states. [2019-11-15 23:19:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:57,875 INFO L93 Difference]: Finished difference Result 10044 states and 26923 transitions. [2019-11-15 23:19:57,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:19:57,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-11-15 23:19:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:57,920 INFO L225 Difference]: With dead ends: 10044 [2019-11-15 23:19:57,920 INFO L226 Difference]: Without dead ends: 10044 [2019-11-15 23:19:57,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:19:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2019-11-15 23:19:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 7329. [2019-11-15 23:19:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7329 states. [2019-11-15 23:19:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 19687 transitions. [2019-11-15 23:19:58,237 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 19687 transitions. Word has length 51 [2019-11-15 23:19:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:58,239 INFO L462 AbstractCegarLoop]: Abstraction has 7329 states and 19687 transitions. [2019-11-15 23:19:58,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:19:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 19687 transitions. [2019-11-15 23:19:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-15 23:19:58,253 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:58,253 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:19:58,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:19:58,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:19:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:19:58,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1375727927, now seen corresponding path program 1 times [2019-11-15 23:19:58,457 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:19:58,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [690392329] [2019-11-15 23:19:58,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:19:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:19:58,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:19:58,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:19:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:19:58,690 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:19:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:19:58,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690392329] [2019-11-15 23:19:58,759 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:19:58,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-15 23:19:58,759 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429157388] [2019-11-15 23:19:58,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:19:58,760 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:19:58,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:19:58,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:19:58,761 INFO L87 Difference]: Start difference. First operand 7329 states and 19687 transitions. Second operand 8 states. [2019-11-15 23:19:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:19:59,221 INFO L93 Difference]: Finished difference Result 22575 states and 60747 transitions. [2019-11-15 23:19:59,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 23:19:59,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2019-11-15 23:19:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:19:59,298 INFO L225 Difference]: With dead ends: 22575 [2019-11-15 23:19:59,298 INFO L226 Difference]: Without dead ends: 22575 [2019-11-15 23:19:59,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:19:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22575 states. [2019-11-15 23:19:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22575 to 18213. [2019-11-15 23:19:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18213 states. [2019-11-15 23:19:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18213 states to 18213 states and 49682 transitions. [2019-11-15 23:19:59,978 INFO L78 Accepts]: Start accepts. Automaton has 18213 states and 49682 transitions. Word has length 73 [2019-11-15 23:19:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:19:59,979 INFO L462 AbstractCegarLoop]: Abstraction has 18213 states and 49682 transitions. [2019-11-15 23:19:59,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:19:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 18213 states and 49682 transitions. [2019-11-15 23:19:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-15 23:19:59,990 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:19:59,990 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:00,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:00,193 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:00,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1775335323, now seen corresponding path program 1 times [2019-11-15 23:20:00,194 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:20:00,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1305038456] [2019-11-15 23:20:00,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:20:00,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:20:00,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:20:00,418 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 23:20:00,418 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:20:00,532 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 23:20:00,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1305038456] [2019-11-15 23:20:00,533 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:20:00,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-15 23:20:00,534 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653651834] [2019-11-15 23:20:00,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 23:20:00,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:20:00,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 23:20:00,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:20:00,535 INFO L87 Difference]: Start difference. First operand 18213 states and 49682 transitions. Second operand 12 states. [2019-11-15 23:20:02,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:20:02,297 INFO L93 Difference]: Finished difference Result 37971 states and 102165 transitions. [2019-11-15 23:20:02,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-15 23:20:02,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2019-11-15 23:20:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:20:02,398 INFO L225 Difference]: With dead ends: 37971 [2019-11-15 23:20:02,398 INFO L226 Difference]: Without dead ends: 37971 [2019-11-15 23:20:02,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=457, Invalid=1705, Unknown=0, NotChecked=0, Total=2162 [2019-11-15 23:20:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37971 states. [2019-11-15 23:20:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37971 to 19896. [2019-11-15 23:20:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19896 states. [2019-11-15 23:20:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19896 states to 19896 states and 54003 transitions. [2019-11-15 23:20:03,280 INFO L78 Accepts]: Start accepts. Automaton has 19896 states and 54003 transitions. Word has length 76 [2019-11-15 23:20:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:20:03,281 INFO L462 AbstractCegarLoop]: Abstraction has 19896 states and 54003 transitions. [2019-11-15 23:20:03,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 23:20:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 19896 states and 54003 transitions. [2019-11-15 23:20:03,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 23:20:03,295 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:03,295 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:03,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:03,498 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash -797882835, now seen corresponding path program 1 times [2019-11-15 23:20:03,499 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:20:03,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1471399324] [2019-11-15 23:20:03,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:20:03,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:20:03,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:20:03,776 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-15 23:20:03,780 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:20:03,784 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:20:03,784 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:20:03,785 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-15 23:20:03,804 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 23:20:03,807 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:20:03,837 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 23:20:03,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1471399324] [2019-11-15 23:20:03,838 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:20:03,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:20:03,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328303252] [2019-11-15 23:20:03,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:20:03,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:20:03,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:20:03,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:20:03,841 INFO L87 Difference]: Start difference. First operand 19896 states and 54003 transitions. Second operand 3 states. [2019-11-15 23:20:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:20:03,899 INFO L93 Difference]: Finished difference Result 8859 states and 22744 transitions. [2019-11-15 23:20:03,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:20:03,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2019-11-15 23:20:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:20:03,918 INFO L225 Difference]: With dead ends: 8859 [2019-11-15 23:20:03,919 INFO L226 Difference]: Without dead ends: 8859 [2019-11-15 23:20:03,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 166 SyntacticMatches, 1 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 23:20:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8859 states. [2019-11-15 23:20:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8859 to 7068. [2019-11-15 23:20:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2019-11-15 23:20:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 17954 transitions. [2019-11-15 23:20:04,092 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 17954 transitions. Word has length 85 [2019-11-15 23:20:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:20:04,093 INFO L462 AbstractCegarLoop]: Abstraction has 7068 states and 17954 transitions. [2019-11-15 23:20:04,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:20:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 17954 transitions. [2019-11-15 23:20:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-15 23:20:04,106 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:04,106 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:04,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:04,309 INFO L410 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -898998695, now seen corresponding path program 1 times [2019-11-15 23:20:04,310 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:20:04,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [497508149] [2019-11-15 23:20:04,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:20:04,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-15 23:20:04,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:20:04,893 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 23:20:04,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:20:04,920 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:20:04,920 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:20:04,921 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-11-15 23:20:05,466 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-15 23:20:05,466 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:20:05,471 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:20:05,472 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:20:05,472 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-15 23:20:05,632 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 23:20:05,632 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:20:06,552 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2019-11-15 23:20:06,553 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 23:20:06,621 INFO L567 ElimStorePlain]: treesize reduction 17, result has 55.3 percent of original size [2019-11-15 23:20:06,621 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 23:20:06,621 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:21 [2019-11-15 23:20:07,514 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 23:20:07,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [497508149] [2019-11-15 23:20:07,515 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:20:07,515 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [22, 20] imperfect sequences [] total 40 [2019-11-15 23:20:07,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924832796] [2019-11-15 23:20:07,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 23:20:07,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:20:07,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 23:20:07,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 23:20:07,518 INFO L87 Difference]: Start difference. First operand 7068 states and 17954 transitions. Second operand 40 states. [2019-11-15 23:20:10,346 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-11-15 23:20:18,906 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-15 23:20:22,890 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-11-15 23:20:23,424 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-11-15 23:20:30,425 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-15 23:20:30,804 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-15 23:20:32,004 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 23:20:34,192 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2019-11-15 23:20:35,171 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-15 23:20:37,480 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-11-15 23:20:38,019 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-15 23:20:38,785 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-11-15 23:20:39,385 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-15 23:20:40,458 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-11-15 23:20:40,904 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-11-15 23:20:41,149 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 23:20:42,616 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-11-15 23:20:43,824 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 23:20:44,061 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-11-15 23:20:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:20:46,119 INFO L93 Difference]: Finished difference Result 31656 states and 80670 transitions. [2019-11-15 23:20:46,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2019-11-15 23:20:46,120 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 86 [2019-11-15 23:20:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:20:46,173 INFO L225 Difference]: With dead ends: 31656 [2019-11-15 23:20:46,173 INFO L226 Difference]: Without dead ends: 31656 [2019-11-15 23:20:46,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13229 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=4089, Invalid=32967, Unknown=0, NotChecked=0, Total=37056 [2019-11-15 23:20:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31656 states. [2019-11-15 23:20:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31656 to 11499. [2019-11-15 23:20:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11499 states. [2019-11-15 23:20:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11499 states to 11499 states and 29880 transitions. [2019-11-15 23:20:46,599 INFO L78 Accepts]: Start accepts. Automaton has 11499 states and 29880 transitions. Word has length 86 [2019-11-15 23:20:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:20:46,600 INFO L462 AbstractCegarLoop]: Abstraction has 11499 states and 29880 transitions. [2019-11-15 23:20:46,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 23:20:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 11499 states and 29880 transitions. [2019-11-15 23:20:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-15 23:20:46,622 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:46,622 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:46,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:46,836 INFO L410 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash 845110469, now seen corresponding path program 1 times [2019-11-15 23:20:46,837 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:20:46,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1503149302] [2019-11-15 23:20:46,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:20:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:20:47,645 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 23:20:47,645 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:20:47,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:20:48,021 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 23:20:48,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:20:48 BasicIcfg [2019-11-15 23:20:48,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:20:48,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:20:48,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:20:48,035 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:20:48,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:19:54" (3/4) ... [2019-11-15 23:20:48,038 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:20:48,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_373ceaf5-1055-409f-9b0b-b6855f185a34/bin/uautomizer/witness.graphml [2019-11-15 23:20:48,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:20:48,185 INFO L168 Benchmark]: Toolchain (without parser) took 55471.03 ms. Allocated memory was 1.0 GB in the beginning and 2.0 GB in the end (delta: 926.9 MB). Free memory was 947.0 MB in the beginning and 921.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 952.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:48,186 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:20:48,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 997.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -103.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:48,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:20:48,187 INFO L168 Benchmark]: Boogie Preprocessor took 83.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:20:48,187 INFO L168 Benchmark]: RCFGBuilder took 695.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:48,188 INFO L168 Benchmark]: TraceAbstraction took 53428.18 ms. Allocated memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: 808.5 MB). Free memory was 1.0 GB in the beginning and 940.8 MB in the end (delta: 69.7 MB). Peak memory consumption was 878.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:48,188 INFO L168 Benchmark]: Witness Printer took 149.32 ms. Allocated memory is still 2.0 GB. Free memory was 940.8 MB in the beginning and 921.0 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:48,191 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 997.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -103.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 111.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 695.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 53428.18 ms. Allocated memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: 808.5 MB). Free memory was 1.0 GB in the beginning and 940.8 MB in the end (delta: 69.7 MB). Peak memory consumption was 878.2 MB. Max. memory is 11.5 GB. * Witness Printer took 149.32 ms. Allocated memory is still 2.0 GB. Free memory was 940.8 MB in the beginning and 921.0 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 919]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L913] 0 static int top=0; VAL [top=0] [L914] 0 static unsigned int arr[(800)]; VAL [arr={1207781650:0}, top=0] [L915] 0 pthread_mutex_t m; VAL [arr={1207781650:0}, m={-1467480021:0}, top=0] [L916] 0 _Bool flag=(0); VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L998] 0 pthread_t id1, id2; VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L1000] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L967] 1 int i; VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L968] 1 unsigned int tmp; VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L969] 1 i=0 VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L969] COND TRUE 1 i<(800) VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L1001] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L983] 2 int i; VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L984] 2 i=0 VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L984] COND TRUE 2 i<(800) VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L972] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L939] COND FALSE 1 !(top==(800)) VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L931] 1 return top; VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L946] 1 stack[get_top()] = x VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=0] [L923] 1 top++ VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=1] [L949] 1 return 0; VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=1] [L974] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arr={1207781650:0}, flag=0, m={-1467480021:0}, top=1] [L976] 1 flag=(1) VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=1] [L987] COND TRUE 2 \read(flag) VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=1] [L931] 2 return top; VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=1] [L953] COND FALSE 2 !(get_top()==0) VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=1] [L927] 2 top-- VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L931] 2 return top; VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L961] EXPR 2 stack[get_top()] VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L961] 2 return stack[get_top()]; VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L989] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L984] 2 i++ VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L984] COND TRUE 2 i<(800) VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L987] COND TRUE 2 \read(flag) VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L931] 2 return top; VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L953] COND TRUE 2 get_top()==0 VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L956] 2 return (-2); VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L989] COND TRUE 2 !(pop(arr)!=(-2)) VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] [L919] 2 __VERIFIER_error() VAL [arr={1207781650:0}, flag=1, m={-1467480021:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 209 locations, 4 error locations. Result: UNSAFE, OverallTime: 53.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 41.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2042 SDtfs, 8687 SDslu, 20963 SDs, 0 SdLazy, 4742 SolverSat, 285 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1254 GetRequests, 996 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13833 ImplicationChecksByTransitivity, 30.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19896occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 49785 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 568 NumberOfCodeBlocks, 568 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 906 ConstructedInterpolants, 0 QuantifiedInterpolants, 260426 SizeOfPredicates, 43 NumberOfNonLiveVariables, 774 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 4/28 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 proved your program to be incorrect! Received shutdown request...