/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-wmm/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:13:38,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:13:38,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:13:38,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:13:38,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:13:38,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:13:38,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:13:38,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:13:38,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:13:38,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:13:38,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:13:38,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:13:38,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:13:38,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:13:38,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:13:38,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:13:38,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:13:38,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:13:38,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:13:38,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:13:38,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:13:38,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:13:38,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:13:38,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:13:38,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:13:39,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:13:39,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:13:39,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:13:39,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:13:39,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:13:39,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:13:39,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:13:39,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:13:39,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:13:39,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:13:39,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:13:39,014 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 [2020-09-12 00:13:39,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:13:39,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:13:39,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:13:39,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:13:39,065 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:13:39,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:13:39,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:13:39,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:13:39,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:13:39,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:13:39,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:13:39,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:13:39,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:13:39,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:13:39,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:13:39,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:13:39,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:13:39,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:13:39,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:13:39,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:13:39,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:13:39,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:13:39,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:13:39,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:13:39,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:13:39,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:13:39,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:13:39,070 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:13:39,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:13:39,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:13:39,070 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:13:39,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:13:39,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:13:39,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:13:39,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:13:39,566 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:13:39,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-09-12 00:13:39,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a844a915/c7731ccd4800434885f963c9040b755e/FLAGf58cd4763 [2020-09-12 00:13:40,361 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:13:40,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-09-12 00:13:40,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a844a915/c7731ccd4800434885f963c9040b755e/FLAGf58cd4763 [2020-09-12 00:13:40,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a844a915/c7731ccd4800434885f963c9040b755e [2020-09-12 00:13:40,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:13:40,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:13:40,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:40,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:13:40,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:13:40,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:40" (1/1) ... [2020-09-12 00:13:40,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b1d80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:40, skipping insertion in model container [2020-09-12 00:13:40,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:40" (1/1) ... [2020-09-12 00:13:40,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:13:40,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:13:41,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:41,210 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:13:41,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:41,373 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:13:41,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41 WrapperNode [2020-09-12 00:13:41,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:41,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:41,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:13:41,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:13:41,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:41,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:13:41,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:13:41,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:13:41,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (1/1) ... [2020-09-12 00:13:41,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:13:41,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:13:41,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:13:41,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:13:41,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (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 [2020-09-12 00:13:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:13:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:13:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:13:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:13:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:13:41,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:13:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:13:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:13:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:13:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:13:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:13:41,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:13:41,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:13:41,558 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:13:41,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:13:41,948 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:13:41,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:13:41 BoogieIcfgContainer [2020-09-12 00:13:41,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:13:41,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:13:41,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:13:41,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:13:41,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:13:40" (1/3) ... [2020-09-12 00:13:41,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61430e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:13:41, skipping insertion in model container [2020-09-12 00:13:41,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:41" (2/3) ... [2020-09-12 00:13:41,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61430e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:13:41, skipping insertion in model container [2020-09-12 00:13:41,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:13:41" (3/3) ... [2020-09-12 00:13:41,964 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-09-12 00:13:41,976 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:13:41,977 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:13:41,987 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:13:41,989 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:13:42,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,021 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,021 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,021 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,022 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,023 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,023 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,029 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,029 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,030 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,030 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,039 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,039 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,044 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:42,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:13:42,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:13:42,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:13:42,100 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:13:42,100 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:13:42,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:13:42,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:13:42,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:13:42,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:13:42,119 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:42,121 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:42,170 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-12 00:13:42,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:13:42,176 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 49 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. [2020-09-12 00:13:42,180 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:42,202 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-12 00:13:42,202 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:13:42,203 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 49 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. [2020-09-12 00:13:42,205 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:13:42,207 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:13:43,803 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-12 00:13:43,804 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-12 00:13:43,808 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-12 00:13:43,837 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-12 00:13:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-12 00:13:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:13:43,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:43,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:43,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-12 00:13:43,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:43,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175669009] [2020-09-12 00:13:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:44,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175669009] [2020-09-12 00:13:44,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:44,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:13:44,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1622010428] [2020-09-12 00:13:44,169 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:44,173 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:44,188 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:13:44,188 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:44,190 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:44,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:44,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:44,214 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-12 00:13:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:44,256 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-12 00:13:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:44,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:13:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:44,278 INFO L225 Difference]: With dead ends: 294 [2020-09-12 00:13:44,279 INFO L226 Difference]: Without dead ends: 230 [2020-09-12 00:13:44,281 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 [2020-09-12 00:13:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-12 00:13:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-12 00:13:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-12 00:13:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-12 00:13:44,361 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-12 00:13:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:44,363 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-12 00:13:44,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-12 00:13:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:13:44,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:44,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:44,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:13:44,366 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-12 00:13:44,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:44,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332868948] [2020-09-12 00:13:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:44,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332868948] [2020-09-12 00:13:44,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:44,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:13:44,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1984257780] [2020-09-12 00:13:44,497 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:44,497 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:44,501 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-12 00:13:44,501 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:44,554 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:44,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:44,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:44,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:44,557 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-12 00:13:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:44,567 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-12 00:13:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:44,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:13:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:44,570 INFO L225 Difference]: With dead ends: 202 [2020-09-12 00:13:44,570 INFO L226 Difference]: Without dead ends: 202 [2020-09-12 00:13:44,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-12 00:13:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-12 00:13:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-12 00:13:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-12 00:13:44,592 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-12 00:13:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:44,593 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-12 00:13:44,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-12 00:13:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:13:44,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:44,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:44,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:13:44,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-12 00:13:44,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:44,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764309134] [2020-09-12 00:13:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:44,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764309134] [2020-09-12 00:13:44,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:44,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:13:44,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1826003204] [2020-09-12 00:13:44,668 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:44,670 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:44,671 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-12 00:13:44,672 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:44,675 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:44,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:44,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:44,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:44,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:44,677 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-12 00:13:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:44,694 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-12 00:13:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:44,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-12 00:13:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:44,697 INFO L225 Difference]: With dead ends: 266 [2020-09-12 00:13:44,697 INFO L226 Difference]: Without dead ends: 140 [2020-09-12 00:13:44,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-12 00:13:44,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-12 00:13:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-12 00:13:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-12 00:13:44,710 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-12 00:13:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:44,711 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-12 00:13:44,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-12 00:13:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:13:44,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:44,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:44,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:13:44,713 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-12 00:13:44,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:44,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991918779] [2020-09-12 00:13:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:44,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991918779] [2020-09-12 00:13:44,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:44,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:13:44,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1769553840] [2020-09-12 00:13:44,864 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:44,865 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:44,868 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-12 00:13:44,868 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:44,888 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:44,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:44,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:44,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:44,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:44,890 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-12 00:13:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:44,942 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-12 00:13:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:13:44,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-12 00:13:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:44,944 INFO L225 Difference]: With dead ends: 165 [2020-09-12 00:13:44,944 INFO L226 Difference]: Without dead ends: 113 [2020-09-12 00:13:44,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-12 00:13:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-12 00:13:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-12 00:13:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-12 00:13:44,966 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-12 00:13:44,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:44,967 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-12 00:13:44,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-12 00:13:44,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:13:44,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:44,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:44,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:13:44,972 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:44,972 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-12 00:13:44,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:44,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893000792] [2020-09-12 00:13:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:45,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893000792] [2020-09-12 00:13:45,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:45,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:45,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1126516794] [2020-09-12 00:13:45,112 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:45,116 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:45,120 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-12 00:13:45,120 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:45,146 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2995#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:13:45,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:13:45,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:45,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:13:45,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:13:45,148 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-12 00:13:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:45,221 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-12 00:13:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:13:45,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-12 00:13:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:45,223 INFO L225 Difference]: With dead ends: 111 [2020-09-12 00:13:45,223 INFO L226 Difference]: Without dead ends: 80 [2020-09-12 00:13:45,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:13:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-12 00:13:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-12 00:13:45,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-12 00:13:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-12 00:13:45,230 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-12 00:13:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:45,231 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-12 00:13:45,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:13:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-12 00:13:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:13:45,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:45,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:45,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:13:45,234 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:45,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-12 00:13:45,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:45,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907440295] [2020-09-12 00:13:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:45,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907440295] [2020-09-12 00:13:45,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:45,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:13:45,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1645992185] [2020-09-12 00:13:45,320 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:45,322 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:45,326 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-12 00:13:45,326 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:45,340 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3275#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:13:45,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-12 00:13:45,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:45,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-12 00:13:45,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:13:45,342 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-12 00:13:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:45,403 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-12 00:13:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:13:45,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-12 00:13:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:45,405 INFO L225 Difference]: With dead ends: 75 [2020-09-12 00:13:45,405 INFO L226 Difference]: Without dead ends: 66 [2020-09-12 00:13:45,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:13:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-12 00:13:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-12 00:13:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-12 00:13:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-12 00:13:45,409 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-12 00:13:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:45,410 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-12 00:13:45,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-12 00:13:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-12 00:13:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:45,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:45,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:45,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:13:45,412 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:45,412 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-12 00:13:45,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:45,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349749555] [2020-09-12 00:13:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:45,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349749555] [2020-09-12 00:13:45,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:45,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:45,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [670543928] [2020-09-12 00:13:45,488 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:45,490 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:45,498 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-12 00:13:45,498 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:45,545 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:45,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:45,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:45,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:45,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:45,546 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-12 00:13:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:45,576 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-12 00:13:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:13:45,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:45,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:45,578 INFO L225 Difference]: With dead ends: 85 [2020-09-12 00:13:45,578 INFO L226 Difference]: Without dead ends: 48 [2020-09-12 00:13:45,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-12 00:13:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-12 00:13:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-12 00:13:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-12 00:13:45,582 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-12 00:13:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:45,582 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-12 00:13:45,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-12 00:13:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:45,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:45,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:45,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:13:45,584 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:45,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-12 00:13:45,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:45,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195522158] [2020-09-12 00:13:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:45,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195522158] [2020-09-12 00:13:45,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:45,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:45,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1632231234] [2020-09-12 00:13:45,643 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:45,645 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:45,652 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-12 00:13:45,652 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:45,668 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:45,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:45,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:45,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:45,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:45,670 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-12 00:13:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:45,690 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-12 00:13:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:13:45,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:45,691 INFO L225 Difference]: With dead ends: 73 [2020-09-12 00:13:45,691 INFO L226 Difference]: Without dead ends: 42 [2020-09-12 00:13:45,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-12 00:13:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-12 00:13:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-12 00:13:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-12 00:13:45,695 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-12 00:13:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:45,695 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-12 00:13:45,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-12 00:13:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:45,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:45,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:45,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:13:45,697 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-12 00:13:45,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:45,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619256731] [2020-09-12 00:13:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:45,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619256731] [2020-09-12 00:13:45,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:45,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:45,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1764307883] [2020-09-12 00:13:45,753 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:45,754 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:45,760 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-12 00:13:45,760 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:45,801 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:45,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:45,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:45,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:45,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:45,803 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-12 00:13:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:45,825 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-12 00:13:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:13:45,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:45,826 INFO L225 Difference]: With dead ends: 41 [2020-09-12 00:13:45,826 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:13:45,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:13:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:13:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:13:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:13:45,827 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-12 00:13:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:45,827 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:13:45,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:13:45,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:13:45,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-12 00:13:45,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:13:45 BasicIcfg [2020-09-12 00:13:45,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:13:45,838 INFO L168 Benchmark]: Toolchain (without parser) took 5232.41 ms. Allocated memory was 143.1 MB in the beginning and 245.4 MB in the end (delta: 102.2 MB). Free memory was 103.5 MB in the beginning and 99.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:45,839 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:13:45,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.33 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 162.8 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:45,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.53 ms. Allocated memory is still 205.5 MB. Free memory was 162.8 MB in the beginning and 161.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:45,848 INFO L168 Benchmark]: Boogie Preprocessor took 32.83 ms. Allocated memory is still 205.5 MB. Free memory was 161.0 MB in the beginning and 159.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:45,849 INFO L168 Benchmark]: RCFGBuilder took 483.86 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 137.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:45,850 INFO L168 Benchmark]: TraceAbstraction took 3878.55 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 136.5 MB in the beginning and 99.2 MB in the end (delta: 37.3 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:45,861 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.33 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 162.8 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.53 ms. Allocated memory is still 205.5 MB. Free memory was 162.8 MB in the beginning and 161.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.83 ms. Allocated memory is still 205.5 MB. Free memory was 161.0 MB in the beginning and 159.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.86 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 137.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3878.55 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 136.5 MB in the beginning and 99.2 MB in the end (delta: 37.3 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 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: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 121 SDslu, 225 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...