/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:37:50,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:37:50,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:37:50,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:37:50,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:37:50,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:37:50,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:37:50,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:37:50,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:37:50,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:37:50,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:37:50,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:37:50,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:37:50,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:37:50,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:37:50,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:37:50,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:37:50,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:37:50,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:37:50,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:37:50,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:37:50,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:37:50,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:37:50,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:37:50,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:37:50,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:37:50,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:37:50,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:37:50,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:37:50,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:37:50,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:37:50,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:37:50,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:37:50,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:37:50,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:37:50,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:37:50,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 11:37:50,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:37:50,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:37:50,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:37:50,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:37:50,177 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:37:50,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:37:50,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:37:50,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:37:50,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:37:50,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:37:50,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:37:50,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:37:50,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:37:50,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:37:50,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:37:50,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:37:50,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:37:50,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:37:50,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:37:50,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:37:50,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:37:50,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:37:50,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:37:50,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:37:50,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:37:50,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:37:50,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:37:50,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:37:50,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:37:50,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:37:50,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:37:50,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:37:50,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:37:50,483 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:37:50,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-03-11 11:37:50,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2988f86/5ea5db83d5b74e6e9cdcb02360ef3b48/FLAG1bfca3887 [2021-03-11 11:37:51,029 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:37:51,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-03-11 11:37:51,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2988f86/5ea5db83d5b74e6e9cdcb02360ef3b48/FLAG1bfca3887 [2021-03-11 11:37:51,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2988f86/5ea5db83d5b74e6e9cdcb02360ef3b48 [2021-03-11 11:37:51,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:37:51,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:37:51,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:37:51,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:37:51,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:37:51,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:37:51" (1/1) ... [2021-03-11 11:37:51,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451db88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:51, skipping insertion in model container [2021-03-11 11:37:51,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:37:51" (1/1) ... [2021-03-11 11:37:51,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:37:51,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:37:51,975 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2021-03-11 11:37:51,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:37:51,994 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:37:52,028 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2021-03-11 11:37:52,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:37:52,265 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:37:52,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52 WrapperNode [2021-03-11 11:37:52,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:37:52,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:37:52,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:37:52,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:37:52,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:37:52,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:37:52,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:37:52,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:37:52,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... [2021-03-11 11:37:52,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:37:52,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:37:52,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:37:52,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:37:52,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-03-11 11:37:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:37:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:37:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:37:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 11:37:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 11:37:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-11 11:37:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:37:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:37:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:37:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 11:37:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 11:37:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:37:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:37:52,435 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:37:52,977 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:37:52,977 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-11 11:37:52,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:37:52 BoogieIcfgContainer [2021-03-11 11:37:52,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:37:52,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:37:52,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:37:52,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:37:52,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:37:51" (1/3) ... [2021-03-11 11:37:52,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d54d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:37:52, skipping insertion in model container [2021-03-11 11:37:52,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:37:52" (2/3) ... [2021-03-11 11:37:52,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d54d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:37:52, skipping insertion in model container [2021-03-11 11:37:52,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:37:52" (3/3) ... [2021-03-11 11:37:52,984 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-03-11 11:37:52,989 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:37:52,989 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:37:52,992 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-11 11:37:52,993 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:37:53,011 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,011 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,011 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,011 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,011 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,012 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,012 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,014 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,014 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,014 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,015 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,015 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:37:53,018 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-11 11:37:53,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 11:37:53,046 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:37:53,047 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:37:53,047 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:37:53,047 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:37:53,047 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:37:53,047 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:37:53,047 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:37:53,047 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:37:53,057 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:37:53,064 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 87 transitions, 182 flow [2021-03-11 11:37:53,066 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 87 transitions, 182 flow [2021-03-11 11:37:53,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-03-11 11:37:53,095 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-03-11 11:37:53,096 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 11:37:53,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2021-03-11 11:37:53,099 INFO L116 LiptonReduction]: Number of co-enabled transitions 238 [2021-03-11 11:37:55,324 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-03-11 11:37:56,079 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-03-11 11:37:56,310 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-03-11 11:37:56,812 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-03-11 11:37:56,937 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-11 11:37:57,041 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-03-11 11:37:57,203 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-03-11 11:37:57,340 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-11 11:37:57,482 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-03-11 11:37:57,622 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-03-11 11:37:57,624 INFO L131 LiptonReduction]: Checked pairs total: 271 [2021-03-11 11:37:57,624 INFO L133 LiptonReduction]: Total number of compositions: 96 [2021-03-11 11:37:57,630 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-03-11 11:37:57,635 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 23 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-03-11 11:37:57,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:37:57,639 INFO L519 BasicCegarLoop]: trace histogram [1] [2021-03-11 11:37:57,639 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:37:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:37:57,642 INFO L82 PathProgramCache]: Analyzing trace with hash 355, now seen corresponding path program 1 times [2021-03-11 11:37:57,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:37:57,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082396430] [2021-03-11 11:37:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:37:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:37:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:37:57,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082396430] [2021-03-11 11:37:57,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:37:57,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-03-11 11:37:57,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064027863] [2021-03-11 11:37:57,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:37:57,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:37:57,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:37:57,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:37:57,847 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:37:57,856 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-03-11 11:37:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:37:57,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-03-11 11:37:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:37:57,862 INFO L225 Difference]: With dead ends: 20 [2021-03-11 11:37:57,862 INFO L226 Difference]: Without dead ends: 13 [2021-03-11 11:37:57,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:37:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-03-11 11:37:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-03-11 11:37:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-03-11 11:37:57,884 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 1 [2021-03-11 11:37:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:37:57,884 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-03-11 11:37:57,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:57,885 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-03-11 11:37:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-03-11 11:37:57,885 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:37:57,885 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-03-11 11:37:57,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:37:57,885 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:37:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:37:57,886 INFO L82 PathProgramCache]: Analyzing trace with hash 349884, now seen corresponding path program 1 times [2021-03-11 11:37:57,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:37:57,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832065908] [2021-03-11 11:37:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:37:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:37:58,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:37:58,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 11:37:58,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:37:58,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:37:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:37:58,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832065908] [2021-03-11 11:37:58,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:37:58,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:37:58,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910356596] [2021-03-11 11:37:58,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:37:58,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:37:58,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:37:58,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:37:58,045 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:37:58,061 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-03-11 11:37:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:37:58,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-03-11 11:37:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:37:58,062 INFO L225 Difference]: With dead ends: 11 [2021-03-11 11:37:58,062 INFO L226 Difference]: Without dead ends: 10 [2021-03-11 11:37:58,062 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:37:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-03-11 11:37:58,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-03-11 11:37:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-03-11 11:37:58,065 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2021-03-11 11:37:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:37:58,066 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-03-11 11:37:58,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-03-11 11:37:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-03-11 11:37:58,066 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:37:58,066 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 11:37:58,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:37:58,067 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:37:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:37:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash 336810399, now seen corresponding path program 1 times [2021-03-11 11:37:58,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:37:58,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906784050] [2021-03-11 11:37:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:37:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:37:58,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:37:58,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:37:58,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:37:58,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:37:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:37:58,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906784050] [2021-03-11 11:37:58,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:37:58,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:37:58,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853137185] [2021-03-11 11:37:58,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:37:58,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:37:58,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:37:58,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:37:58,159 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:37:58,167 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-03-11 11:37:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:37:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-03-11 11:37:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:37:58,168 INFO L225 Difference]: With dead ends: 10 [2021-03-11 11:37:58,168 INFO L226 Difference]: Without dead ends: 7 [2021-03-11 11:37:58,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:37:58,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-03-11 11:37:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-03-11 11:37:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-03-11 11:37:58,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2021-03-11 11:37:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:37:58,171 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-03-11 11:37:58,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:37:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-03-11 11:37:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 11:37:58,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:37:58,172 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 11:37:58,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:37:58,172 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:37:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:37:58,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1851191484, now seen corresponding path program 1 times [2021-03-11 11:37:58,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:37:58,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649934313] [2021-03-11 11:37:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:37:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 11:37:58,218 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 11:37:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 11:37:58,249 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 11:37:58,277 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 11:37:58,277 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 11:37:58,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:37:58,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:37:58 BasicIcfg [2021-03-11 11:37:58,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:37:58,303 INFO L168 Benchmark]: Toolchain (without parser) took 6989.63 ms. Allocated memory was 255.9 MB in the beginning and 419.4 MB in the end (delta: 163.6 MB). Free memory was 233.6 MB in the beginning and 218.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 178.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:37:58,303 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 171.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:37:58,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 949.73 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 232.9 MB in the beginning and 294.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:37:58,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.42 ms. Allocated memory is still 348.1 MB. Free memory was 294.5 MB in the beginning and 291.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:37:58,308 INFO L168 Benchmark]: Boogie Preprocessor took 39.86 ms. Allocated memory is still 348.1 MB. Free memory was 291.4 MB in the beginning and 289.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:37:58,309 INFO L168 Benchmark]: RCFGBuilder took 609.06 ms. Allocated memory is still 348.1 MB. Free memory was 289.3 MB in the beginning and 311.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:37:58,309 INFO L168 Benchmark]: TraceAbstraction took 5321.54 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 311.1 MB in the beginning and 218.0 MB in the end (delta: 93.0 MB). Peak memory consumption was 165.4 MB. Max. memory is 16.0 GB. [2021-03-11 11:37:58,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 171.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 949.73 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 232.9 MB in the beginning and 294.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.42 ms. Allocated memory is still 348.1 MB. Free memory was 294.5 MB in the beginning and 291.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 39.86 ms. Allocated memory is still 348.1 MB. Free memory was 291.4 MB in the beginning and 289.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 609.06 ms. Allocated memory is still 348.1 MB. Free memory was 289.3 MB in the beginning and 311.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5321.54 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 311.1 MB in the beginning and 218.0 MB in the end (delta: 93.0 MB). Peak memory consumption was 165.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4557.8ms, 86 PlacesBefore, 17 PlacesAfterwards, 87 TransitionsBefore, 15 TransitionsAfterwards, 238 CoEnabledTransitionPairs, 6 FixpointIterations, 64 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 96 TotalNumberOfCompositions, 271 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 217, positive: 193, positive conditional: 0, positive unconditional: 193, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 175, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 175, positive: 161, positive conditional: 0, positive unconditional: 161, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 217, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 175, unknown conditional: 0, unknown unconditional: 175] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={6:0}, pdev=1, t1={9:0}] [L1713] 0 return 0; [L1734] COND FALSE 0 !(module_init()!=0) [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={6:0}, pdev=4, t1={9:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={6:0}, pdev=6, t1={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5233.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 4.2ms, AutomataDifference: 55.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4587.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.2ms SsaConstructionTime, 84.7ms SatisfiabilityAnalysisTime, 218.4ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 incorrect! Received shutdown request...