/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:30:42,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:30:42,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:30:42,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:30:42,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:30:42,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:30:42,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:30:42,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:30:42,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:30:42,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:30:42,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:30:42,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:30:42,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:30:42,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:30:42,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:30:42,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:30:42,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:30:42,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:30:42,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:30:42,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:30:42,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:30:42,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:30:42,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:30:42,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:30:42,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:30:42,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:30:42,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:30:42,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:30:42,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:30:42,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:30:42,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:30:42,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:30:42,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:30:42,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:30:42,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:30:42,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:30:42,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:30:42,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:30:42,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:30:42,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:30:42,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:30:42,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:30:42,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:30:42,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:30:42,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:30:42,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:30:42,103 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:30:42,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:30:42,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:30:42,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:30:42,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:30:42,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:30:42,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:30:42,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:30:42,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:30:42,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:30:42,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:30:42,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:30:42,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:30:42,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:30:42,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:30:42,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:30:42,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:30:42,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:42,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:30:42,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:30:42,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:30:42,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:30:42,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:30:42,107 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:30:42,107 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:30:42,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:30:42,108 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:30:42,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:30:42,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:30:42,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:30:42,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:30:42,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:30:42,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-16 12:30:42,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b78de54/7b857527c8244a26897619593969d0d0/FLAG0c6c62b58 [2020-10-16 12:30:43,158 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:30:43,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-16 12:30:43,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b78de54/7b857527c8244a26897619593969d0d0/FLAG0c6c62b58 [2020-10-16 12:30:43,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b78de54/7b857527c8244a26897619593969d0d0 [2020-10-16 12:30:43,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:30:43,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:30:43,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:43,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:30:43,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:30:43,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecc0849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43, skipping insertion in model container [2020-10-16 12:30:43,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:30:43,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:30:44,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:44,147 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:30:44,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:44,276 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:30:44,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44 WrapperNode [2020-10-16 12:30:44,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:44,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:44,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:30:44,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:30:44,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:44,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:30:44,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:30:44,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:30:44,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... [2020-10-16 12:30:44,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:30:44,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:30:44,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:30:44,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:30:44,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:30:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 12:30:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 12:30:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:30:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:30:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:30:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:30:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:30:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:30:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:30:44,487 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:30:44,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:30:44,853 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-16 12:30:44,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:44 BoogieIcfgContainer [2020-10-16 12:30:44,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:30:44,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:30:44,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:30:44,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:30:44,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:43" (1/3) ... [2020-10-16 12:30:44,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac70da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:44, skipping insertion in model container [2020-10-16 12:30:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:44" (2/3) ... [2020-10-16 12:30:44,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac70da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:44, skipping insertion in model container [2020-10-16 12:30:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:44" (3/3) ... [2020-10-16 12:30:44,866 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-10-16 12:30:44,878 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:30:44,878 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:30:44,887 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:30:44,888 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:30:44,927 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,928 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,928 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,928 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,930 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,930 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,932 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,948 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,948 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:44,959 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 12:30:44,977 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:30:45,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:30:45,003 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:30:45,003 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:30:45,003 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:30:45,004 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:30:45,004 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:30:45,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:30:45,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:30:45,018 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:30:45,019 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 82 transitions, 186 flow [2020-10-16 12:30:45,021 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 82 transitions, 186 flow [2020-10-16 12:30:45,023 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 82 transitions, 186 flow [2020-10-16 12:30:45,073 INFO L129 PetriNetUnfolder]: 14/82 cut-off events. [2020-10-16 12:30:45,073 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 12:30:45,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 82 events. 14/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2020-10-16 12:30:45,084 INFO L117 LiptonReduction]: Number of co-enabled transitions 1428 [2020-10-16 12:30:45,997 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-16 12:30:46,194 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-16 12:30:46,280 INFO L132 LiptonReduction]: Checked pairs total: 6034 [2020-10-16 12:30:46,280 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 12:30:46,288 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 47 transitions, 116 flow [2020-10-16 12:30:46,326 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 389 states. [2020-10-16 12:30:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states. [2020-10-16 12:30:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:30:46,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:46,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:30:46,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 321069377, now seen corresponding path program 1 times [2020-10-16 12:30:46,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:46,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281029436] [2020-10-16 12:30:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:46,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281029436] [2020-10-16 12:30:46,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:46,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:46,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [950025711] [2020-10-16 12:30:46,560 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:46,563 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:46,577 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:30:46,578 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:46,582 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:46,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:30:46,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:46,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:30:46,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:30:46,601 INFO L87 Difference]: Start difference. First operand 389 states. Second operand 2 states. [2020-10-16 12:30:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:46,628 INFO L93 Difference]: Finished difference Result 389 states and 1030 transitions. [2020-10-16 12:30:46,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:30:46,633 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-10-16 12:30:46,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:46,652 INFO L225 Difference]: With dead ends: 389 [2020-10-16 12:30:46,652 INFO L226 Difference]: Without dead ends: 350 [2020-10-16 12:30:46,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:30:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-16 12:30:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2020-10-16 12:30:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-16 12:30:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 945 transitions. [2020-10-16 12:30:46,743 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 945 transitions. Word has length 5 [2020-10-16 12:30:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:46,744 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 945 transitions. [2020-10-16 12:30:46,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:30:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 945 transitions. [2020-10-16 12:30:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:30:46,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:46,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:30:46,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:30:46,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:46,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1363179009, now seen corresponding path program 1 times [2020-10-16 12:30:46,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:46,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86944599] [2020-10-16 12:30:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:46,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86944599] [2020-10-16 12:30:46,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:46,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:46,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [795032374] [2020-10-16 12:30:46,890 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:46,890 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:46,892 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:30:46,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:46,892 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:46,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:46,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:46,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:46,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:46,895 INFO L87 Difference]: Start difference. First operand 350 states and 945 transitions. Second operand 3 states. [2020-10-16 12:30:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:46,927 INFO L93 Difference]: Finished difference Result 365 states and 947 transitions. [2020-10-16 12:30:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:46,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-16 12:30:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:46,931 INFO L225 Difference]: With dead ends: 365 [2020-10-16 12:30:46,931 INFO L226 Difference]: Without dead ends: 293 [2020-10-16 12:30:46,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-16 12:30:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 275. [2020-10-16 12:30:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-16 12:30:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 734 transitions. [2020-10-16 12:30:46,956 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 734 transitions. Word has length 6 [2020-10-16 12:30:46,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:46,956 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 734 transitions. [2020-10-16 12:30:46,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 734 transitions. [2020-10-16 12:30:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:30:46,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:46,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:46,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:30:46,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash 128013856, now seen corresponding path program 1 times [2020-10-16 12:30:46,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:46,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418731178] [2020-10-16 12:30:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:47,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418731178] [2020-10-16 12:30:47,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:47,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:47,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [571720429] [2020-10-16 12:30:47,022 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:47,023 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:47,024 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:30:47,025 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:47,026 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:47,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:47,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:47,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:47,027 INFO L87 Difference]: Start difference. First operand 275 states and 734 transitions. Second operand 3 states. [2020-10-16 12:30:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:47,052 INFO L93 Difference]: Finished difference Result 266 states and 691 transitions. [2020-10-16 12:30:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:47,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:30:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:47,055 INFO L225 Difference]: With dead ends: 266 [2020-10-16 12:30:47,055 INFO L226 Difference]: Without dead ends: 188 [2020-10-16 12:30:47,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-16 12:30:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-16 12:30:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-16 12:30:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 495 transitions. [2020-10-16 12:30:47,068 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 495 transitions. Word has length 8 [2020-10-16 12:30:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:47,069 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 495 transitions. [2020-10-16 12:30:47,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 495 transitions. [2020-10-16 12:30:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:30:47,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:47,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:47,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:30:47,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:47,073 INFO L82 PathProgramCache]: Analyzing trace with hash -53773409, now seen corresponding path program 1 times [2020-10-16 12:30:47,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:47,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492095632] [2020-10-16 12:30:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:47,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492095632] [2020-10-16 12:30:47,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:47,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:47,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [574442339] [2020-10-16 12:30:47,117 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:47,118 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:47,120 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:30:47,120 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:47,158 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:47,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:47,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:47,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:47,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:47,160 INFO L87 Difference]: Start difference. First operand 188 states and 495 transitions. Second operand 3 states. [2020-10-16 12:30:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:47,180 INFO L93 Difference]: Finished difference Result 188 states and 485 transitions. [2020-10-16 12:30:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:47,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:30:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:47,182 INFO L225 Difference]: With dead ends: 188 [2020-10-16 12:30:47,182 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:30:47,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:30:47,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-16 12:30:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:30:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 409 transitions. [2020-10-16 12:30:47,190 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 409 transitions. Word has length 11 [2020-10-16 12:30:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:47,191 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 409 transitions. [2020-10-16 12:30:47,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 409 transitions. [2020-10-16 12:30:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:30:47,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:47,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:47,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:30:47,193 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:47,193 INFO L82 PathProgramCache]: Analyzing trace with hash -214374855, now seen corresponding path program 2 times [2020-10-16 12:30:47,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:47,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401051479] [2020-10-16 12:30:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:47,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401051479] [2020-10-16 12:30:47,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:47,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:47,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [710615660] [2020-10-16 12:30:47,229 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:47,230 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:47,231 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-10-16 12:30:47,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:47,232 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:47,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:47,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:47,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:47,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:47,233 INFO L87 Difference]: Start difference. First operand 160 states and 409 transitions. Second operand 3 states. [2020-10-16 12:30:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:47,243 INFO L93 Difference]: Finished difference Result 110 states and 320 transitions. [2020-10-16 12:30:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:47,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:30:47,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:47,244 INFO L225 Difference]: With dead ends: 110 [2020-10-16 12:30:47,245 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:30:47,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:47,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:30:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:30:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:30:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:30:47,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-16 12:30:47,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:47,246 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:30:47,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:30:47,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:30:47,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:30:47,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:30:47 BasicIcfg [2020-10-16 12:30:47,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:30:47,253 INFO L168 Benchmark]: Toolchain (without parser) took 3765.56 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 101.7 MB in the beginning and 172.4 MB in the end (delta: -70.7 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:47,254 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-16 12:30:47,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.74 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 161.8 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:47,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.11 ms. Allocated memory is still 201.9 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:47,257 INFO L168 Benchmark]: Boogie Preprocessor took 42.76 ms. Allocated memory is still 201.9 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:47,258 INFO L168 Benchmark]: RCFGBuilder took 449.30 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 135.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:47,259 INFO L168 Benchmark]: TraceAbstraction took 2393.37 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 135.2 MB in the beginning and 172.4 MB in the end (delta: -37.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:47,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 786.74 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 161.8 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 79.11 ms. Allocated memory is still 201.9 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.76 ms. Allocated memory is still 201.9 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.30 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 135.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2393.37 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 135.2 MB in the beginning and 172.4 MB in the end (delta: -37.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 686 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 270 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 74 PlacesBefore, 42 PlacesAfterwards, 82 TransitionsBefore, 47 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 43 TotalNumberOfCompositions, 6034 MoverChecksTotal - PositiveResult [Line: 705]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 210 SDtfs, 86 SDslu, 76 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...