/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/concurrent/pthreads/forkFork.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:21:29,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:21:29,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:21:29,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:21:29,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:21:29,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:21:29,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:21:29,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:21:29,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:21:29,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:21:29,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:21:29,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:21:29,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:21:29,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:21:29,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:21:29,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:21:29,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:21:29,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:21:29,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:21:29,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:21:29,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:21:29,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:21:29,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:21:29,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:21:29,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:21:29,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:21:29,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:21:29,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:21:29,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:21:29,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:21:29,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:21:29,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:21:29,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:21:29,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:21:29,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:21:29,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:21:29,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:21:29,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:21:29,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:21:29,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:21:29,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:21:29,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:21:29,914 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:21:29,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:21:29,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:21:29,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:21:29,916 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:21:29,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:21:29,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:21:29,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:21:29,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:21:29,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:21:29,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:21:29,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:21:29,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:21:29,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:21:29,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:21:29,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:21:29,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:21:29,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:21:29,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:21:29,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:21:29,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:21:29,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:21:29,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:21:29,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:21:29,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:21:29,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:21:29,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:21:29,928 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:21:29,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:21:30,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:21:30,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:21:30,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:21:30,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:21:30,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:21:30,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkFork.c [2020-10-16 12:21:30,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4ea1afef/725f93fadb0b4307aac99866846b0d06/FLAG86dd9ab25 [2020-10-16 12:21:30,829 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:21:30,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/concurrent/pthreads/forkFork.c [2020-10-16 12:21:30,830 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 12:21:30,831 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 12:21:30,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4ea1afef/725f93fadb0b4307aac99866846b0d06/FLAG86dd9ab25 [2020-10-16 12:21:31,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4ea1afef/725f93fadb0b4307aac99866846b0d06 [2020-10-16 12:21:31,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:21:31,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:21:31,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:21:31,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:21:31,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:21:31,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5e5a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31, skipping insertion in model container [2020-10-16 12:21:31,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:21:31,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:21:31,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:21:31,487 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:21:31,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:21:31,535 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:21:31,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31 WrapperNode [2020-10-16 12:21:31,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:21:31,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:21:31,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:21:31,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:21:31,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:21:31,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:21:31,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:21:31,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:21:31,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... [2020-10-16 12:21:31,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:21:31,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:21:31,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:21:31,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:21:31,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-16 12:21:31,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-16 12:21:31,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:21:31,673 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-10-16 12:21:31,673 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-10-16 12:21:31,674 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-16 12:21:31,674 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-16 12:21:31,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:21:31,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:21:31,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 12:21:31,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:21:31,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-16 12:21:31,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:21:31,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:21:31,677 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:21:32,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:21:32,083 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 12:21:32,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:21:32 BoogieIcfgContainer [2020-10-16 12:21:32,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:21:32,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:21:32,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:21:32,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:21:32,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:21:31" (1/3) ... [2020-10-16 12:21:32,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d9b803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:21:32, skipping insertion in model container [2020-10-16 12:21:32,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:31" (2/3) ... [2020-10-16 12:21:32,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d9b803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:21:32, skipping insertion in model container [2020-10-16 12:21:32,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:21:32" (3/3) ... [2020-10-16 12:21:32,094 INFO L111 eAbstractionObserver]: Analyzing ICFG forkFork.c [2020-10-16 12:21:32,106 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:21:32,107 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:21:32,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:21:32,115 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:21:32,155 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,155 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,156 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,156 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,156 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,157 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,157 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,157 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,157 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,157 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,158 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,158 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,158 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,158 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,159 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,159 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,159 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,159 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,160 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,160 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,160 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,160 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,161 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,161 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,162 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,162 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,162 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,163 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,163 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,163 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,164 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,164 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,164 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,164 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,165 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,165 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,165 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,165 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,165 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,166 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,166 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,167 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,167 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,167 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,167 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,168 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,168 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,172 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,172 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,172 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,172 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,173 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,173 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,173 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,174 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,174 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,174 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,178 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,179 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,179 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,179 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,181 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,187 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,187 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,188 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,188 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,188 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,188 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,189 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,189 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,189 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,190 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,190 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,190 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,190 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,191 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,191 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,191 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,195 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,196 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,196 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,196 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,196 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,197 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,197 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,197 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,197 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:32,230 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2020-10-16 12:21:32,245 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:21:32,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:21:32,264 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:21:32,265 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:21:32,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:21:32,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:21:32,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:21:32,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:21:32,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:21:32,283 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:21:32,283 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 83 transitions, 194 flow [2020-10-16 12:21:32,285 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 83 transitions, 194 flow [2020-10-16 12:21:32,287 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 194 flow [2020-10-16 12:21:32,356 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2020-10-16 12:21:32,356 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 12:21:32,364 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 2/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 98. Up to 5 conditions per place. [2020-10-16 12:21:32,373 INFO L117 LiptonReduction]: Number of co-enabled transitions 334 [2020-10-16 12:21:33,641 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-16 12:21:33,795 INFO L132 LiptonReduction]: Checked pairs total: 1210 [2020-10-16 12:21:33,795 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-16 12:21:33,805 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 26 transitions, 80 flow [2020-10-16 12:21:33,815 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 56 states. [2020-10-16 12:21:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-16 12:21:33,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:21:33,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:33,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:33,826 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash -149989621, now seen corresponding path program 1 times [2020-10-16 12:21:33,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:33,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504971269] [2020-10-16 12:21:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:34,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504971269] [2020-10-16 12:21:34,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:34,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 12:21:34,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858565788] [2020-10-16 12:21:34,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:21:34,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:34,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:21:34,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:21:34,148 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 8 states. [2020-10-16 12:21:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:34,414 INFO L93 Difference]: Finished difference Result 50 states and 83 transitions. [2020-10-16 12:21:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:21:34,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-10-16 12:21:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:34,434 INFO L225 Difference]: With dead ends: 50 [2020-10-16 12:21:34,435 INFO L226 Difference]: Without dead ends: 47 [2020-10-16 12:21:34,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:21:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-16 12:21:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-16 12:21:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-16 12:21:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-10-16 12:21:34,473 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-10-16 12:21:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:34,474 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-10-16 12:21:34,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:21:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-10-16 12:21:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:21:34,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:34,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:34,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:21:34,476 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:34,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1255807394, now seen corresponding path program 1 times [2020-10-16 12:21:34,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:34,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130339488] [2020-10-16 12:21:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:34,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130339488] [2020-10-16 12:21:34,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:34,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-16 12:21:34,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545866108] [2020-10-16 12:21:34,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:21:34,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:34,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:21:34,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:21:34,666 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 10 states. [2020-10-16 12:21:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:35,042 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-10-16 12:21:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:21:35,042 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-16 12:21:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:35,044 INFO L225 Difference]: With dead ends: 57 [2020-10-16 12:21:35,044 INFO L226 Difference]: Without dead ends: 57 [2020-10-16 12:21:35,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:21:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-16 12:21:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-16 12:21:35,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-16 12:21:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2020-10-16 12:21:35,055 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 12 [2020-10-16 12:21:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:35,055 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2020-10-16 12:21:35,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:21:35,055 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2020-10-16 12:21:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:21:35,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:35,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:35,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:21:35,057 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:35,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:35,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1573748830, now seen corresponding path program 2 times [2020-10-16 12:21:35,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:35,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753158352] [2020-10-16 12:21:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:35,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753158352] [2020-10-16 12:21:35,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:35,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 12:21:35,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72173532] [2020-10-16 12:21:35,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:21:35,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:35,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:21:35,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:21:35,173 INFO L87 Difference]: Start difference. First operand 51 states and 85 transitions. Second operand 7 states. [2020-10-16 12:21:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:35,385 INFO L93 Difference]: Finished difference Result 56 states and 85 transitions. [2020-10-16 12:21:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:21:35,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-16 12:21:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:35,388 INFO L225 Difference]: With dead ends: 56 [2020-10-16 12:21:35,388 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 12:21:35,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:21:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 12:21:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2020-10-16 12:21:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-16 12:21:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 68 transitions. [2020-10-16 12:21:35,395 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 68 transitions. Word has length 12 [2020-10-16 12:21:35,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:35,395 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 68 transitions. [2020-10-16 12:21:35,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:21:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 68 transitions. [2020-10-16 12:21:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:35,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:35,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:35,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:21:35,397 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:35,397 INFO L82 PathProgramCache]: Analyzing trace with hash 67837309, now seen corresponding path program 1 times [2020-10-16 12:21:35,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:35,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801418764] [2020-10-16 12:21:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:35,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801418764] [2020-10-16 12:21:35,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:35,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-16 12:21:35,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923300066] [2020-10-16 12:21:35,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:21:35,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:35,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:21:35,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:21:35,707 INFO L87 Difference]: Start difference. First operand 41 states and 68 transitions. Second operand 15 states. [2020-10-16 12:21:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:36,390 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2020-10-16 12:21:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:21:36,391 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2020-10-16 12:21:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:36,392 INFO L225 Difference]: With dead ends: 47 [2020-10-16 12:21:36,392 INFO L226 Difference]: Without dead ends: 39 [2020-10-16 12:21:36,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:21:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-16 12:21:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-16 12:21:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-16 12:21:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 64 transitions. [2020-10-16 12:21:36,400 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 64 transitions. Word has length 17 [2020-10-16 12:21:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:36,401 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 64 transitions. [2020-10-16 12:21:36,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:21:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2020-10-16 12:21:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:36,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:36,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:36,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:21:36,406 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1960936835, now seen corresponding path program 2 times [2020-10-16 12:21:36,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:36,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902700438] [2020-10-16 12:21:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:36,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902700438] [2020-10-16 12:21:36,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:36,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:21:36,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740243848] [2020-10-16 12:21:36,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:36,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:36,689 INFO L87 Difference]: Start difference. First operand 39 states and 64 transitions. Second operand 14 states. [2020-10-16 12:21:37,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:37,313 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2020-10-16 12:21:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:37,315 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:21:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:37,316 INFO L225 Difference]: With dead ends: 47 [2020-10-16 12:21:37,316 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 12:21:37,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 12:21:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 12:21:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 12:21:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-16 12:21:37,321 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-16 12:21:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:37,322 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-16 12:21:37,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-16 12:21:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:37,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:37,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:37,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:21:37,323 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:37,323 INFO L82 PathProgramCache]: Analyzing trace with hash -430501265, now seen corresponding path program 3 times [2020-10-16 12:21:37,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:37,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009604939] [2020-10-16 12:21:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:37,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009604939] [2020-10-16 12:21:37,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:37,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:21:37,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779244400] [2020-10-16 12:21:37,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:37,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:37,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:37,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:37,598 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 14 states. [2020-10-16 12:21:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:38,187 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2020-10-16 12:21:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:38,188 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:21:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:38,189 INFO L225 Difference]: With dead ends: 48 [2020-10-16 12:21:38,189 INFO L226 Difference]: Without dead ends: 37 [2020-10-16 12:21:38,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-16 12:21:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-16 12:21:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-16 12:21:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2020-10-16 12:21:38,197 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 17 [2020-10-16 12:21:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:38,198 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2020-10-16 12:21:38,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2020-10-16 12:21:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:38,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:38,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:38,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:21:38,200 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:38,202 INFO L82 PathProgramCache]: Analyzing trace with hash -308965303, now seen corresponding path program 4 times [2020-10-16 12:21:38,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:38,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447137667] [2020-10-16 12:21:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:38,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447137667] [2020-10-16 12:21:38,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:38,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:21:38,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458322050] [2020-10-16 12:21:38,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:38,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:38,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:38,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:38,462 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand 14 states. [2020-10-16 12:21:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:39,069 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-10-16 12:21:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:39,070 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:21:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:39,071 INFO L225 Difference]: With dead ends: 51 [2020-10-16 12:21:39,071 INFO L226 Difference]: Without dead ends: 35 [2020-10-16 12:21:39,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-16 12:21:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-16 12:21:39,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-16 12:21:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2020-10-16 12:21:39,076 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 17 [2020-10-16 12:21:39,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:39,076 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 54 transitions. [2020-10-16 12:21:39,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:39,076 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2020-10-16 12:21:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:39,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:39,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:39,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:21:39,078 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:39,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1664064943, now seen corresponding path program 5 times [2020-10-16 12:21:39,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:39,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424046944] [2020-10-16 12:21:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:39,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424046944] [2020-10-16 12:21:39,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:39,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:21:39,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079013106] [2020-10-16 12:21:39,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:39,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:39,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:39,305 INFO L87 Difference]: Start difference. First operand 35 states and 54 transitions. Second operand 14 states. [2020-10-16 12:21:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:39,895 INFO L93 Difference]: Finished difference Result 53 states and 82 transitions. [2020-10-16 12:21:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:39,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:21:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:39,897 INFO L225 Difference]: With dead ends: 53 [2020-10-16 12:21:39,897 INFO L226 Difference]: Without dead ends: 33 [2020-10-16 12:21:39,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-16 12:21:39,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-16 12:21:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-16 12:21:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-10-16 12:21:39,901 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 17 [2020-10-16 12:21:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:39,901 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-10-16 12:21:39,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-10-16 12:21:39,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:39,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:39,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:39,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:21:39,902 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash -150565329, now seen corresponding path program 6 times [2020-10-16 12:21:39,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:39,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11987063] [2020-10-16 12:21:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:40,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11987063] [2020-10-16 12:21:40,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:40,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:21:40,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659970971] [2020-10-16 12:21:40,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:40,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:40,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:40,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:40,146 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 14 states. [2020-10-16 12:21:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:40,707 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-10-16 12:21:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:40,719 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:21:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:40,720 INFO L225 Difference]: With dead ends: 55 [2020-10-16 12:21:40,720 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 12:21:40,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 12:21:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 12:21:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 12:21:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2020-10-16 12:21:40,723 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 46 transitions. Word has length 17 [2020-10-16 12:21:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:40,723 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-10-16 12:21:40,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2020-10-16 12:21:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:40,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:40,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:40,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:21:40,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -211343889, now seen corresponding path program 7 times [2020-10-16 12:21:40,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:40,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450734071] [2020-10-16 12:21:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:40,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450734071] [2020-10-16 12:21:40,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:40,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:21:40,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651566842] [2020-10-16 12:21:40,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:40,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:40,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:40,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:40,935 INFO L87 Difference]: Start difference. First operand 31 states and 46 transitions. Second operand 14 states. [2020-10-16 12:21:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:41,470 INFO L93 Difference]: Finished difference Result 55 states and 83 transitions. [2020-10-16 12:21:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:41,471 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:21:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:41,472 INFO L225 Difference]: With dead ends: 55 [2020-10-16 12:21:41,472 INFO L226 Difference]: Without dead ends: 30 [2020-10-16 12:21:41,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-16 12:21:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-16 12:21:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-16 12:21:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-16 12:21:41,477 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-16 12:21:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:41,477 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-16 12:21:41,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-16 12:21:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:21:41,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:41,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:41,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:21:41,479 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash 57402539, now seen corresponding path program 8 times [2020-10-16 12:21:41,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:41,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159570187] [2020-10-16 12:21:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:41,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159570187] [2020-10-16 12:21:41,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:41,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:21:41,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346428683] [2020-10-16 12:21:41,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:41,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:41,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:41,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:41,722 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 14 states. [2020-10-16 12:21:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:42,258 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-16 12:21:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:42,259 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:21:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:42,259 INFO L225 Difference]: With dead ends: 29 [2020-10-16 12:21:42,259 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:21:42,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:21:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:21:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:21:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:21:42,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 12:21:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:42,263 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:21:42,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:21:42,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:21:42,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:21:42,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:21:42 BasicIcfg [2020-10-16 12:21:42,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:21:42,270 INFO L168 Benchmark]: Toolchain (without parser) took 11099.45 ms. Allocated memory was 140.0 MB in the beginning and 327.7 MB in the end (delta: 187.7 MB). Free memory was 101.2 MB in the beginning and 266.0 MB in the end (delta: -164.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:42,272 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-16 12:21:42,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.20 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 179.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:42,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 178.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:42,285 INFO L168 Benchmark]: Boogie Preprocessor took 25.44 ms. Allocated memory is still 202.4 MB. Free memory was 178.0 MB in the beginning and 176.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:42,286 INFO L168 Benchmark]: RCFGBuilder took 481.60 ms. Allocated memory is still 202.4 MB. Free memory was 175.6 MB in the beginning and 153.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:42,287 INFO L168 Benchmark]: TraceAbstraction took 10180.68 ms. Allocated memory was 202.4 MB in the beginning and 327.7 MB in the end (delta: 125.3 MB). Free memory was 153.7 MB in the beginning and 266.0 MB in the end (delta: -112.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:42,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.20 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 179.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 178.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.44 ms. Allocated memory is still 202.4 MB. Free memory was 178.0 MB in the beginning and 176.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.60 ms. Allocated memory is still 202.4 MB. Free memory was 175.6 MB in the beginning and 153.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10180.68 ms. Allocated memory was 202.4 MB in the beginning and 327.7 MB in the end (delta: 125.3 MB). Free memory was 153.7 MB in the beginning and 266.0 MB in the end (delta: -112.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 169 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 20 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 89 PlacesBefore, 30 PlacesAfterwards, 83 TransitionsBefore, 26 TransitionsAfterwards, 334 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 61 TotalNumberOfCompositions, 1210 MoverChecksTotal - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 106 SDtfs, 540 SDslu, 217 SDs, 0 SdLazy, 2379 SolverSat, 264 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 37451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...