/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-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 20:30:45,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:30:45,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:30:45,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:30:45,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:30:45,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:30:45,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:30:45,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:30:45,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:30:45,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:30:45,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:30:45,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:30:45,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:30:45,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:30:45,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:30:45,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:30:45,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:30:46,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:30:46,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:30:46,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:30:46,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:30:46,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:30:46,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:30:46,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:30:46,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 20:30:46,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:30:46,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:30:46,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:30:46,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:30:46,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:30:46,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:30:46,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:30:46,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:30:46,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:30:46,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:30:46,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:30:46,024 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 [2020-09-11 20:30:46,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:30:46,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:30:46,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:30:46,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:30:46,056 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:30:46,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:30:46,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:30:46,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:30:46,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:30:46,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:30:46,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:30:46,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:30:46,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:30:46,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:30:46,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:30:46,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:30:46,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:30:46,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:30:46,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:30:46,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:30:46,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:30:46,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:30:46,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:30:46,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:30:46,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:30:46,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:30:46,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:30:46,061 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 20:30:46,061 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:30:46,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:30:46,062 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 20:30:46,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:30:46,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:30:46,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:30:46,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:30:46,550 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:30:46,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-09-11 20:30:46,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6018ab38c/92450190b27b4287ae1b80591318375f/FLAG31568472d [2020-09-11 20:30:47,304 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:30:47,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-09-11 20:30:47,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6018ab38c/92450190b27b4287ae1b80591318375f/FLAG31568472d [2020-09-11 20:30:47,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6018ab38c/92450190b27b4287ae1b80591318375f [2020-09-11 20:30:47,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:30:47,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:30:47,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:30:47,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:30:47,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:30:47,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:30:47" (1/1) ... [2020-09-11 20:30:47,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db515e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:47, skipping insertion in model container [2020-09-11 20:30:47,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:30:47" (1/1) ... [2020-09-11 20:30:47,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:30:47,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:30:48,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:30:48,159 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:30:48,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:30:48,305 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:30:48,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48 WrapperNode [2020-09-11 20:30:48,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:30:48,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:30:48,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:30:48,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:30:48,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:30:48,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:30:48,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:30:48,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:30:48,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (1/1) ... [2020-09-11 20:30:48,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:30:48,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:30:48,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:30:48,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:30:48,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (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 [2020-09-11 20:30:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 20:30:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 20:30:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:30:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:30:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:30:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:30:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:30:48,511 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:30:49,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:30:49,244 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-11 20:30:49,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:30:49 BoogieIcfgContainer [2020-09-11 20:30:49,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:30:49,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:30:49,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:30:49,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:30:49,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:30:47" (1/3) ... [2020-09-11 20:30:49,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db347b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:30:49, skipping insertion in model container [2020-09-11 20:30:49,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:30:48" (2/3) ... [2020-09-11 20:30:49,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db347b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:30:49, skipping insertion in model container [2020-09-11 20:30:49,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:30:49" (3/3) ... [2020-09-11 20:30:49,260 INFO L109 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-09-11 20:30:49,272 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:30:49,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:30:49,283 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-11 20:30:49,285 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:30:49,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,311 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:30:49,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 20:30:49,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:30:49,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:30:49,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:30:49,381 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:30:49,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:30:49,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:30:49,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:30:49,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:30:49,400 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 43 transitions, 91 flow [2020-09-11 20:30:49,403 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-09-11 20:30:49,442 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-09-11 20:30:49,442 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 20:30:49,448 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-09-11 20:30:49,450 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-09-11 20:30:49,462 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-09-11 20:30:49,462 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 20:30:49,463 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-09-11 20:30:49,465 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 378 [2020-09-11 20:30:49,466 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:30:50,209 INFO L206 etLargeBlockEncoding]: Checked pairs total: 911 [2020-09-11 20:30:50,209 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-09-11 20:30:50,214 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-09-11 20:30:50,227 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-11 20:30:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-11 20:30:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-11 20:30:50,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:30:50,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-11 20:30:50,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:30:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:30:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash 329343693, now seen corresponding path program 1 times [2020-09-11 20:30:50,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:30:50,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65095921] [2020-09-11 20:30:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:30:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:30:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:30:50,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65095921] [2020-09-11 20:30:50,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:30:50,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 20:30:50,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1396011380] [2020-09-11 20:30:50,516 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:30:50,520 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:30:50,536 INFO L274 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-09-11 20:30:50,537 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:30:50,539 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:30:50,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:30:50,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:30:50,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:30:50,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:30:50,564 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-11 20:30:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:30:50,590 INFO L93 Difference]: Finished difference Result 34 states and 59 transitions. [2020-09-11 20:30:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:30:50,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-09-11 20:30:50,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:30:50,605 INFO L225 Difference]: With dead ends: 34 [2020-09-11 20:30:50,605 INFO L226 Difference]: Without dead ends: 32 [2020-09-11 20:30:50,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:30:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-11 20:30:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-11 20:30:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-11 20:30:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 56 transitions. [2020-09-11 20:30:50,656 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 56 transitions. Word has length 5 [2020-09-11 20:30:50,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:30:50,657 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 56 transitions. [2020-09-11 20:30:50,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:30:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 56 transitions. [2020-09-11 20:30:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 20:30:50,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:30:50,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:30:50,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:30:50,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:30:50,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:30:50,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1321198047, now seen corresponding path program 1 times [2020-09-11 20:30:50,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:30:50,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204441587] [2020-09-11 20:30:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:30:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:30:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:30:50,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204441587] [2020-09-11 20:30:50,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:30:50,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:30:50,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [985384079] [2020-09-11 20:30:50,730 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:30:50,735 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:30:50,740 INFO L274 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-09-11 20:30:50,740 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:30:50,740 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:30:50,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:30:50,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:30:50,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:30:50,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:30:50,743 INFO L87 Difference]: Start difference. First operand 32 states and 56 transitions. Second operand 3 states. [2020-09-11 20:30:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:30:50,767 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2020-09-11 20:30:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:30:50,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-11 20:30:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:30:50,769 INFO L225 Difference]: With dead ends: 27 [2020-09-11 20:30:50,769 INFO L226 Difference]: Without dead ends: 24 [2020-09-11 20:30:50,770 INFO L675 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 [2020-09-11 20:30:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-11 20:30:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-11 20:30:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-11 20:30:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2020-09-11 20:30:50,780 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 7 [2020-09-11 20:30:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:30:50,780 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2020-09-11 20:30:50,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:30:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2020-09-11 20:30:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 20:30:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:30:50,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:30:50,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:30:50,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:30:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:30:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash -845321639, now seen corresponding path program 1 times [2020-09-11 20:30:50,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:30:50,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010528208] [2020-09-11 20:30:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:30:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:30:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:30:50,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010528208] [2020-09-11 20:30:50,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:30:50,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 20:30:50,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1324111174] [2020-09-11 20:30:50,900 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:30:50,901 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:30:50,904 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-09-11 20:30:50,904 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:30:50,914 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:30:50,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:30:50,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:30:50,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:30:50,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:30:50,916 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 4 states. [2020-09-11 20:30:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:30:50,941 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2020-09-11 20:30:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:30:50,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 20:30:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:30:50,943 INFO L225 Difference]: With dead ends: 18 [2020-09-11 20:30:50,943 INFO L226 Difference]: Without dead ends: 18 [2020-09-11 20:30:50,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:30:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-11 20:30:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-11 20:30:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-11 20:30:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-09-11 20:30:50,947 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2020-09-11 20:30:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:30:50,948 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-09-11 20:30:50,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:30:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-09-11 20:30:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 20:30:50,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:30:50,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:30:50,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 20:30:50,950 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:30:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:30:50,950 INFO L82 PathProgramCache]: Analyzing trace with hash -231891374, now seen corresponding path program 1 times [2020-09-11 20:30:50,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:30:50,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351483857] [2020-09-11 20:30:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:30:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:30:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:30:51,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351483857] [2020-09-11 20:30:51,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:30:51,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:30:51,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [257642685] [2020-09-11 20:30:51,078 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:30:51,079 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:30:51,088 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-09-11 20:30:51,089 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:30:51,117 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:30:51,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:30:51,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:30:51,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:30:51,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:30:51,119 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 4 states. [2020-09-11 20:30:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:30:51,130 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2020-09-11 20:30:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:30:51,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 20:30:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:30:51,132 INFO L225 Difference]: With dead ends: 17 [2020-09-11 20:30:51,132 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 20:30:51,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:30:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 20:30:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 20:30:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 20:30:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 20:30:51,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-09-11 20:30:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:30:51,134 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 20:30:51,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:30:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 20:30:51,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 20:30:51,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 20:30:51,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:30:51 BasicIcfg [2020-09-11 20:30:51,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 20:30:51,143 INFO L168 Benchmark]: Toolchain (without parser) took 3577.10 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 102.1 MB in the beginning and 206.3 MB in the end (delta: -104.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-09-11 20:30:51,144 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 20:30:51,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.69 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 163.1 MB in the end (delta: -61.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-09-11 20:30:51,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.11 ms. Allocated memory is still 203.4 MB. Free memory was 163.1 MB in the beginning and 161.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-11 20:30:51,147 INFO L168 Benchmark]: Boogie Preprocessor took 35.64 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 20:30:51,148 INFO L168 Benchmark]: RCFGBuilder took 842.37 ms. Allocated memory is still 203.4 MB. Free memory was 158.9 MB in the beginning and 111.8 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-09-11 20:30:51,149 INFO L168 Benchmark]: TraceAbstraction took 1888.59 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 111.2 MB in the beginning and 206.3 MB in the end (delta: -95.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 20:30:51,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.69 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 163.1 MB in the end (delta: -61.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.11 ms. Allocated memory is still 203.4 MB. Free memory was 163.1 MB in the beginning and 161.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.64 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 842.37 ms. Allocated memory is still 203.4 MB. Free memory was 158.9 MB in the beginning and 111.8 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1888.59 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 111.2 MB in the beginning and 206.3 MB in the end (delta: -95.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 45 ProgramPointsBefore, 18 ProgramPointsAfterwards, 43 TransitionsBefore, 16 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 183 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 911 CheckedPairsTotal, 28 TotalNumberOfCompositions - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 710]: 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 2 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 46 SDtfs, 20 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 844 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 correct! Received shutdown request...