/usr/bin/java -Xmx8000000000 -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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:45:29,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:45:29,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:45:29,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 22:45:29,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 22:45:29,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 22:45:29,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 22:45:29,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 22:45:29,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 22:45:29,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 22:45:29,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 22:45:29,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 22:45:29,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 22:45:29,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 22:45:29,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 22:45:29,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 22:45:29,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 22:45:29,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 22:45:29,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 22:45:29,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 22:45:29,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 22:45:29,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 22:45:29,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 22:45:29,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 22:45:29,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 22:45:29,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 22:45:29,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 22:45:29,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 22:45:29,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 22:45:29,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-10-13 22:45:29,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:45:29,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:45:29,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:45:29,218 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-PN-NoLbe.epf [2021-10-13 22:45:29,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:45:29,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:45:29,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:45:29,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:45:29,246 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:45:29,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:45:29,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:45:29,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:45:29,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:45:29,248 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:45:29,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-13 22:45:29,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:45:29,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:45:29,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:45:29,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:45:29,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:45:29,444 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:45:29,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-10-13 22:45:29,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4525bb3/68a5e3ee81fb4fce965002491451a72c/FLAG36c688639 [2021-10-13 22:45:29,946 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:45:29,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-10-13 22:45:29,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4525bb3/68a5e3ee81fb4fce965002491451a72c/FLAG36c688639 [2021-10-13 22:45:29,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4525bb3/68a5e3ee81fb4fce965002491451a72c [2021-10-13 22:45:29,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:45:29,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:45:29,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:45:29,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:45:29,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:45:29,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:45:29" (1/1) ... [2021-10-13 22:45:29,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561ea112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:29, skipping insertion in model container [2021-10-13 22:45:29,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:45:29" (1/1) ... [2021-10-13 22:45:29,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:45:30,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:45:30,416 WARN L228 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] [2021-10-13 22:45:30,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:45:30,445 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:45:30,490 WARN L228 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] [2021-10-13 22:45:30,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:45:30,589 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:45:30,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30 WrapperNode [2021-10-13 22:45:30,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:45:30,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:45:30,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:45:30,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:45:30,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:45:30,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:45:30,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:45:30,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:45:30,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:45:30,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:45:30,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:45:30,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:45:30,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (1/1) ... [2021-10-13 22:45:30,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:45:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:45:30,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 22:45:30,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 22:45:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:45:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:45:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:45:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 22:45:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-13 22:45:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 22:45:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:45:30,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:45:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:45:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 22:45:30,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 22:45:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:45:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:45:30,765 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 22:45:31,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:45:31,087 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-13 22:45:31,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:45:31 BoogieIcfgContainer [2021-10-13 22:45:31,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:45:31,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:45:31,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:45:31,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:45:31,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:45:29" (1/3) ... [2021-10-13 22:45:31,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0a7394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:45:31, skipping insertion in model container [2021-10-13 22:45:31,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:45:30" (2/3) ... [2021-10-13 22:45:31,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0a7394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:45:31, skipping insertion in model container [2021-10-13 22:45:31,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:45:31" (3/3) ... [2021-10-13 22:45:31,094 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-10-13 22:45:31,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:45:31,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 22:45:31,097 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:45:31,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,114 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,117 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,120 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,120 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,120 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:45:31,128 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-13 22:45:31,158 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:45:31,163 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 22:45:31,163 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 22:45:31,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-10-13 22:45:31,200 INFO L129 PetriNetUnfolder]: 4/104 cut-off events. [2021-10-13 22:45:31,200 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-13 22:45:31,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 4/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-10-13 22:45:31,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 90 transitions, 188 flow [2021-10-13 22:45:31,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 79 transitions, 164 flow [2021-10-13 22:45:31,210 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-10-13 22:45:31,210 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:45:31,210 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:45:31,210 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:45:31,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:45:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:45:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash -877078411, now seen corresponding path program 1 times [2021-10-13 22:45:31,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:45:31,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584594101] [2021-10-13 22:45:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:45:31,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:45:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:45:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:45:31,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:45:31,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584594101] [2021-10-13 22:45:31,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584594101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:45:31,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:45:31,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:45:31,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437920498] [2021-10-13 22:45:31,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:45:31,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:45:31,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:45:31,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:45:31,532 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-10-13 22:45:31,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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) [2021-10-13 22:45:31,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:45:31,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-10-13 22:45:31,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:45:31,602 INFO L129 PetriNetUnfolder]: 3/90 cut-off events. [2021-10-13 22:45:31,602 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-13 22:45:31,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 90 events. 3/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 37. Up to 12 conditions per place. [2021-10-13 22:45:31,603 INFO L132 encePairwiseOnDemand]: 75/90 looper letters, 13 selfloop transitions, 13 changer transitions 1/79 dead transitions. [2021-10-13 22:45:31,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 218 flow [2021-10-13 22:45:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 22:45:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-13 22:45:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 456 transitions. [2021-10-13 22:45:31,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2021-10-13 22:45:31,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 456 transitions. [2021-10-13 22:45:31,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 456 transitions. [2021-10-13 22:45:31,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:45:31,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 456 transitions. [2021-10-13 22:45:31,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2021-10-13 22:45:31,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-13 22:45:31,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-13 22:45:31,639 INFO L186 Difference]: Start difference. First operand has 80 places, 79 transitions, 164 flow. Second operand 7 states and 456 transitions. [2021-10-13 22:45:31,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 218 flow [2021-10-13 22:45:31,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-13 22:45:31,643 INFO L242 Difference]: Finished difference. Result has 82 places, 76 transitions, 196 flow [2021-10-13 22:45:31,645 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2021-10-13 22:45:31,645 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2021-10-13 22:45:31,645 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 196 flow [2021-10-13 22:45:31,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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) [2021-10-13 22:45:31,646 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:45:31,646 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:45:31,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:45:31,646 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:45:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:45:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1953959461, now seen corresponding path program 1 times [2021-10-13 22:45:31,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:45:31,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511109429] [2021-10-13 22:45:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:45:31,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:45:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:45:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:45:31,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:45:31,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511109429] [2021-10-13 22:45:31,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511109429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:45:31,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:45:31,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 22:45:31,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312392025] [2021-10-13 22:45:31,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 22:45:31,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:45:31,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 22:45:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 22:45:31,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-10-13 22:45:31,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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) [2021-10-13 22:45:31,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:45:31,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-10-13 22:45:31,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:45:31,805 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2021-10-13 22:45:31,805 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2021-10-13 22:45:31,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 86 events. 3/86 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 87. Up to 13 conditions per place. [2021-10-13 22:45:31,807 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2021-10-13 22:45:31,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 256 flow [2021-10-13 22:45:31,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 22:45:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-13 22:45:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2021-10-13 22:45:31,809 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7174603174603175 [2021-10-13 22:45:31,809 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2021-10-13 22:45:31,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2021-10-13 22:45:31,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:45:31,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2021-10-13 22:45:31,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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) [2021-10-13 22:45:31,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-13 22:45:31,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-13 22:45:31,812 INFO L186 Difference]: Start difference. First operand has 82 places, 76 transitions, 196 flow. Second operand 7 states and 452 transitions. [2021-10-13 22:45:31,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 256 flow [2021-10-13 22:45:31,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-13 22:45:31,816 INFO L242 Difference]: Finished difference. Result has 84 places, 75 transitions, 214 flow [2021-10-13 22:45:31,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2021-10-13 22:45:31,817 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2021-10-13 22:45:31,817 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 214 flow [2021-10-13 22:45:31,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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) [2021-10-13 22:45:31,817 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:45:31,817 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:45:31,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:45:31,818 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:45:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:45:31,821 INFO L82 PathProgramCache]: Analyzing trace with hash -931715026, now seen corresponding path program 1 times [2021-10-13 22:45:31,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:45:31,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996386152] [2021-10-13 22:45:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:45:31,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:45:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:45:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:45:31,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:45:31,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996386152] [2021-10-13 22:45:31,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996386152] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:45:31,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:45:31,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 22:45:31,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69564493] [2021-10-13 22:45:31,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 22:45:31,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:45:31,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 22:45:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 22:45:31,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2021-10-13 22:45:31,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-10-13 22:45:31,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:45:31,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2021-10-13 22:45:31,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:45:31,950 INFO L129 PetriNetUnfolder]: 1/78 cut-off events. [2021-10-13 22:45:31,950 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-13 22:45:31,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 78 events. 1/78 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 79. Up to 8 conditions per place. [2021-10-13 22:45:31,951 INFO L132 encePairwiseOnDemand]: 87/90 looper letters, 7 selfloop transitions, 0 changer transitions 10/75 dead transitions. [2021-10-13 22:45:31,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 225 flow [2021-10-13 22:45:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 22:45:31,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-13 22:45:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2021-10-13 22:45:31,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8527777777777777 [2021-10-13 22:45:31,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2021-10-13 22:45:31,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2021-10-13 22:45:31,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:45:31,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2021-10-13 22:45:31,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2021-10-13 22:45:31,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2021-10-13 22:45:31,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2021-10-13 22:45:31,955 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 214 flow. Second operand 4 states and 307 transitions. [2021-10-13 22:45:31,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 225 flow [2021-10-13 22:45:31,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 184 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-10-13 22:45:31,959 INFO L242 Difference]: Finished difference. Result has 79 places, 65 transitions, 146 flow [2021-10-13 22:45:31,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2021-10-13 22:45:31,959 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2021-10-13 22:45:31,959 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 146 flow [2021-10-13 22:45:31,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-10-13 22:45:31,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:45:31,960 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:45:31,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:45:31,960 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:45:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:45:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1488108840, now seen corresponding path program 1 times [2021-10-13 22:45:31,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:45:31,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447715372] [2021-10-13 22:45:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:45:31,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:45:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:45:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:45:32,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:45:32,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447715372] [2021-10-13 22:45:32,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447715372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:45:32,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:45:32,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 22:45:32,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761892844] [2021-10-13 22:45:32,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:45:32,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:45:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:45:32,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:45:32,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-10-13 22:45:32,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-10-13 22:45:32,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:45:32,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-10-13 22:45:32,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:45:32,054 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-13 22:45:32,055 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-10-13 22:45:32,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 80 events. 2/80 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 104. Up to 11 conditions per place. [2021-10-13 22:45:32,055 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 8 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2021-10-13 22:45:32,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 176 flow [2021-10-13 22:45:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:45:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:45:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2021-10-13 22:45:32,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2021-10-13 22:45:32,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2021-10-13 22:45:32,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2021-10-13 22:45:32,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:45:32,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2021-10-13 22:45:32,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2021-10-13 22:45:32,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-10-13 22:45:32,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-10-13 22:45:32,060 INFO L186 Difference]: Start difference. First operand has 79 places, 65 transitions, 146 flow. Second operand 3 states and 232 transitions. [2021-10-13 22:45:32,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 176 flow [2021-10-13 22:45:32,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 172 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-13 22:45:32,068 INFO L242 Difference]: Finished difference. Result has 72 places, 67 transitions, 172 flow [2021-10-13 22:45:32,068 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2021-10-13 22:45:32,068 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, -8 predicate places. [2021-10-13 22:45:32,068 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 172 flow [2021-10-13 22:45:32,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-10-13 22:45:32,069 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:45:32,069 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:45:32,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 22:45:32,069 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-13 22:45:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:45:32,070 INFO L82 PathProgramCache]: Analyzing trace with hash 456497190, now seen corresponding path program 1 times [2021-10-13 22:45:32,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:45:32,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807147567] [2021-10-13 22:45:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:45:32,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:45:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:45:32,104 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 22:45:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 22:45:32,150 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 22:45:32,150 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 22:45:32,151 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:45:32,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:45:32,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:45:32,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:45:32,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:45:32,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 22:45:32,160 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:45:32,160 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:45:32,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:45:32 BasicIcfg [2021-10-13 22:45:32,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:45:32,202 INFO L168 Benchmark]: Toolchain (without parser) took 2219.42 ms. Allocated memory was 179.3 MB in the beginning and 266.3 MB in the end (delta: 87.0 MB). Free memory was 120.5 MB in the beginning and 189.5 MB in the end (delta: -69.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:32,202 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 179.3 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:45:32,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.53 ms. Allocated memory was 179.3 MB in the beginning and 266.3 MB in the end (delta: 87.0 MB). Free memory was 120.3 MB in the beginning and 194.4 MB in the end (delta: -74.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:32,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.04 ms. Allocated memory is still 266.3 MB. Free memory was 194.4 MB in the beginning and 191.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:32,203 INFO L168 Benchmark]: Boogie Preprocessor took 32.70 ms. Allocated memory is still 266.3 MB. Free memory was 191.2 MB in the beginning and 189.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:32,204 INFO L168 Benchmark]: RCFGBuilder took 398.30 ms. Allocated memory is still 266.3 MB. Free memory was 189.2 MB in the beginning and 171.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-10-13 22:45:32,204 INFO L168 Benchmark]: TraceAbstraction took 1111.79 ms. Allocated memory is still 266.3 MB. Free memory was 170.8 MB in the beginning and 189.5 MB in the end (delta: -18.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:45:32,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 179.3 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 603.53 ms. Allocated memory was 179.3 MB in the beginning and 266.3 MB in the end (delta: 87.0 MB). Free memory was 120.3 MB in the beginning and 194.4 MB in the end (delta: -74.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 65.04 ms. Allocated memory is still 266.3 MB. Free memory was 194.4 MB in the beginning and 191.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.70 ms. Allocated memory is still 266.3 MB. Free memory was 191.2 MB in the beginning and 189.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 398.30 ms. Allocated memory is still 266.3 MB. Free memory was 189.2 MB in the beginning and 171.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1111.79 ms. Allocated memory is still 266.3 MB. Free memory was 170.8 MB in the beginning and 189.5 MB in the end (delta: -18.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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; VAL [t1={7:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={9:0}, t1={7:0}] [L1698] 0 int pdev; VAL [mutex={9:0}, pdev=0, t1={7:0}] [L1709] 0 pdev = 1 VAL [mutex={9:0}, pdev=1, t1={7:0}] [L1695] COND FALSE 0 !(!expression) VAL [mutex={9:0}, pdev=1, t1={7:0}] [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={9:0}, pdev=1, t1={7:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1713] 0 return 0; VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1734] COND FALSE 0 !(module_init()!=0) VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1721] 0 void *status; VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={9:0}, pdev=4, t1={7:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={9:0}, pdev=6, t1={7:0}] [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [arg={0:0}, arg={0:0}, mutex={9:0}, pdev=6, t1={7:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1000.9ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 296.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 41.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 55 SDtfs, 39 SDslu, 45 SDs, 0 SdLazy, 76 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 77.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=2, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.8ms SsaConstructionTime, 84.6ms SatisfiabilityAnalysisTime, 293.4ms InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2021-10-13 22:45:32,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...