/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 01:59:59,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 01:59:59,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 01:59:59,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 01:59:59,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 01:59:59,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 01:59:59,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 01:59:59,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 01:59:59,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 01:59:59,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 01:59:59,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 01:59:59,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 01:59:59,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 01:59:59,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 01:59:59,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 01:59:59,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 01:59:59,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 01:59:59,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 01:59:59,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 01:59:59,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 01:59:59,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 01:59:59,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 01:59:59,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 01:59:59,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 01:59:59,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 01:59:59,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 01:59:59,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 01:59:59,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 01:59:59,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 01:59:59,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 01:59:59,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 01:59:59,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 01:59:59,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 01:59:59,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 01:59:59,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 01:59:59,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 01:59:59,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 01:59:59,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 01:59:59,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 01:59:59,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 01:59:59,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 01:59:59,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 01:59:59,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 01:59:59,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 01:59:59,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 01:59:59,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 01:59:59,701 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 01:59:59,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 01:59:59,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 01:59:59,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 01:59:59,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 01:59:59,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 01:59:59,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 01:59:59,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 01:59:59,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 01:59:59,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 01:59:59,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 01:59:59,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 01:59:59,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 01:59:59,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 01:59:59,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 01:59:59,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 01:59:59,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 01:59:59,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 01:59:59,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 01:59:59,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 01:59:59,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 01:59:59,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 01:59:59,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 01:59:59,708 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 01:59:59,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 01:59:59,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:00:00,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:00:00,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:00:00,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:00:00,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:00:00,031 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:00:00,032 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-04-18 02:00:00,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105053466/7cee35742ffa4cf79689c37cafcac958/FLAG1b27c500b [2020-04-18 02:00:00,657 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:00:00,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-04-18 02:00:00,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105053466/7cee35742ffa4cf79689c37cafcac958/FLAG1b27c500b [2020-04-18 02:00:00,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105053466/7cee35742ffa4cf79689c37cafcac958 [2020-04-18 02:00:00,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:00:00,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:00:00,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:00:00,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:00:00,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:00:00,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:00:00" (1/1) ... [2020-04-18 02:00:00,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1124f4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:00, skipping insertion in model container [2020-04-18 02:00:00,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:00:00" (1/1) ... [2020-04-18 02:00:00,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:00:01,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:00:01,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:00:01,584 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:00:01,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:00:01,705 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:00:01,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01 WrapperNode [2020-04-18 02:00:01,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:00:01,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:00:01,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:00:01,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:00:01,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:00:01,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:00:01,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:00:01,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:00:01,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... [2020-04-18 02:00:01,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:00:01,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:00:01,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:00:01,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:00:01,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:00:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:00:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:00:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:00:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:00:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:00:01,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:00:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:00:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:00:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:00:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:00:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:00:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:00:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:00:01,862 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:00:02,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:00:02,302 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:00:02,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:00:02 BoogieIcfgContainer [2020-04-18 02:00:02,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:00:02,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:00:02,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:00:02,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:00:02,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:00:00" (1/3) ... [2020-04-18 02:00:02,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741ee89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:00:02, skipping insertion in model container [2020-04-18 02:00:02,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:01" (2/3) ... [2020-04-18 02:00:02,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741ee89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:00:02, skipping insertion in model container [2020-04-18 02:00:02,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:00:02" (3/3) ... [2020-04-18 02:00:02,316 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-04-18 02:00:02,327 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:00:02,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:00:02,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:00:02,336 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:00:02,360 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,361 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,361 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,361 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,362 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,362 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,363 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,363 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,363 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,363 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,364 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,364 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,365 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,365 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,366 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,366 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,371 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,371 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,371 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,377 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,377 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,378 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,378 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,380 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,381 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,381 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,381 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:02,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:00:02,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:00:02,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:00:02,419 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:00:02,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:00:02,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:00:02,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:00:02,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:00:02,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:00:02,436 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:02,439 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:02,483 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:00:02,483 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:00:02,489 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:00:02,492 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:02,513 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:00:02,513 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:00:02,514 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:00:02,516 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:00:02,518 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:00:04,016 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:00:04,208 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 02:00:04,208 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 02:00:04,213 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:00:04,247 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:00:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:00:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:00:04,263 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:04,264 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:04,265 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:04,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 02:00:04,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:04,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666563992] [2020-04-18 02:00:04,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:04,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666563992] [2020-04-18 02:00:04,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:04,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:00:04,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110438668] [2020-04-18 02:00:04,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:00:04,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:00:04,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:00:04,597 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:00:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:04,638 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:00:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:00:04,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:00:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:04,663 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:00:04,663 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:00:04,669 INFO L678 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 [2020-04-18 02:00:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:00:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:00:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:00:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:00:04,761 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:00:04,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:04,762 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:00:04,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:00:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:00:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:00:04,764 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:04,764 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:04,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:04,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-18 02:00:04,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:04,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80070728] [2020-04-18 02:00:04,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:04,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80070728] [2020-04-18 02:00:04,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:04,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:04,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902365627] [2020-04-18 02:00:04,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:04,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:04,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:04,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:04,865 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:00:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:04,904 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-04-18 02:00:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:04,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:00:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:04,907 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:00:04,907 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 02:00:04,908 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:00:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 02:00:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 02:00:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 02:00:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-04-18 02:00:04,938 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-04-18 02:00:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:04,939 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-04-18 02:00:04,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-04-18 02:00:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:00:04,940 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:04,940 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:04,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:04,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-04-18 02:00:04,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:04,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853815790] [2020-04-18 02:00:04,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:05,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853815790] [2020-04-18 02:00:05,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:05,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:00:05,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864843434] [2020-04-18 02:00:05,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:05,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:05,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:05,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:05,007 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-04-18 02:00:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:05,052 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-04-18 02:00:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:00:05,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:00:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:05,055 INFO L225 Difference]: With dead ends: 244 [2020-04-18 02:00:05,055 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 02:00:05,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:00:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 02:00:05,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-04-18 02:00:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-18 02:00:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-04-18 02:00:05,072 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-04-18 02:00:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:05,073 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-04-18 02:00:05,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:05,074 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-04-18 02:00:05,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:00:05,075 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:05,075 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:05,075 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-04-18 02:00:05,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:05,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753748206] [2020-04-18 02:00:05,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:05,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753748206] [2020-04-18 02:00:05,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:05,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:05,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111438120] [2020-04-18 02:00:05,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:05,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:05,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:05,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:05,170 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-04-18 02:00:05,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:05,195 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-04-18 02:00:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:05,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:00:05,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:05,196 INFO L225 Difference]: With dead ends: 140 [2020-04-18 02:00:05,196 INFO L226 Difference]: Without dead ends: 68 [2020-04-18 02:00:05,197 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:00:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-18 02:00:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-18 02:00:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 02:00:05,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-18 02:00:05,203 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-04-18 02:00:05,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:05,204 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-18 02:00:05,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-18 02:00:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:00:05,205 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:05,205 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:05,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:05,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-04-18 02:00:05,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:05,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524700450] [2020-04-18 02:00:05,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:05,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524700450] [2020-04-18 02:00:05,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:05,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:05,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566658213] [2020-04-18 02:00:05,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:05,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:05,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:05,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:05,269 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-18 02:00:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:05,290 INFO L93 Difference]: Finished difference Result 56 states and 112 transitions. [2020-04-18 02:00:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:05,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:00:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:05,291 INFO L225 Difference]: With dead ends: 56 [2020-04-18 02:00:05,291 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:00:05,291 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:00:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:00:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:00:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:00:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:00:05,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-04-18 02:00:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:05,293 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:00:05,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:00:05,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:00:05,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:00:05 BasicIcfg [2020-04-18 02:00:05,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:00:05,299 INFO L168 Benchmark]: Toolchain (without parser) took 4340.62 ms. Allocated memory was 137.9 MB in the beginning and 249.0 MB in the end (delta: 111.1 MB). Free memory was 101.6 MB in the beginning and 124.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:05,300 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:00:05,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.58 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 156.8 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:05,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.06 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:05,303 INFO L168 Benchmark]: Boogie Preprocessor took 27.94 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:05,304 INFO L168 Benchmark]: RCFGBuilder took 513.56 ms. Allocated memory is still 201.9 MB. Free memory was 153.3 MB in the beginning and 130.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:05,305 INFO L168 Benchmark]: TraceAbstraction took 2988.61 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 130.2 MB in the beginning and 124.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:05,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.58 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 156.8 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.06 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.94 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.56 ms. Allocated memory is still 201.9 MB. Free memory was 153.3 MB in the beginning and 130.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2988.61 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 130.2 MB in the beginning and 124.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 90 SDtfs, 88 SDslu, 88 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1231 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...