/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/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:59:07,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:59:07,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:59:07,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:59:07,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:59:07,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:59:07,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:59:07,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:59:07,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:59:07,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:59:07,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:59:07,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:59:07,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:59:07,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:59:07,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:59:07,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:59:07,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:59:07,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:59:07,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:59:07,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:59:07,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:59:07,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:59:07,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:59:07,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:59:07,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 00:59:07,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 00:59:07,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 00:59:07,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 00:59:07,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 00:59:07,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 00:59:07,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 00:59:07,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 00:59:07,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 00:59:07,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:59:07,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:59:07,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:59:07,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 00:59:07,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:59:07,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:59:07,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:59:07,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:59:07,412 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:59:07,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:59:07,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:59:07,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:59:07,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:59:07,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:59:07,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:59:07,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:59:07,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:59:07,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:59:07,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:59:07,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:59:07,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:59:07,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:59:07,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:59:07,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:59:07,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:59:07,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:59:07,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:59:07,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:59:07,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:59:07,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:59:07,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:59:07,417 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:59:07,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:59:07,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:59:07,418 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:59:07,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:59:07,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:59:07,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:59:07,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:59:07,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:59:07,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-06 00:59:07,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18c62dd7/0a604118f4484f35bdb0ffb73a068194/FLAG9e1af4a77 [2020-10-06 00:59:08,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:59:08,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-06 00:59:08,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18c62dd7/0a604118f4484f35bdb0ffb73a068194/FLAG9e1af4a77 [2020-10-06 00:59:08,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18c62dd7/0a604118f4484f35bdb0ffb73a068194 [2020-10-06 00:59:08,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:59:08,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:59:08,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:59:08,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:59:08,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:59:08,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:59:08" (1/1) ... [2020-10-06 00:59:08,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188eab9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:08, skipping insertion in model container [2020-10-06 00:59:08,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:59:08" (1/1) ... [2020-10-06 00:59:08,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:59:08,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:59:09,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:59:09,231 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:59:09,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:59:09,386 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:59:09,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09 WrapperNode [2020-10-06 00:59:09,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:59:09,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:59:09,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:59:09,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:59:09,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:59:09,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:59:09,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:59:09,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:59:09,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (1/1) ... [2020-10-06 00:59:09,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:59:09,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:59:09,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:59:09,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:59:09,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (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 [2020-10-06 00:59:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:59:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 00:59:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:59:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:59:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 00:59:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 00:59:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 00:59:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 00:59:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 00:59:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 00:59:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 00:59:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:59:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:59:09,534 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 00:59:09,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:59:09,862 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 00:59:09,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:59:09 BoogieIcfgContainer [2020-10-06 00:59:09,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:59:09,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:59:09,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:59:09,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:59:09,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:59:08" (1/3) ... [2020-10-06 00:59:09,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa11401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:59:09, skipping insertion in model container [2020-10-06 00:59:09,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:59:09" (2/3) ... [2020-10-06 00:59:09,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa11401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:59:09, skipping insertion in model container [2020-10-06 00:59:09,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:59:09" (3/3) ... [2020-10-06 00:59:09,874 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-10-06 00:59:09,886 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:59:09,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:59:09,893 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 00:59:09,894 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:59:09,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,929 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,929 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,930 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,930 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,931 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,932 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,932 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,933 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,933 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,934 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,934 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,939 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,940 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,940 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,952 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,953 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,956 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,957 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,957 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,957 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:59:09,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 00:59:10,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:59:10,002 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:59:10,002 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:59:10,002 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:59:10,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:59:10,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:59:10,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:59:10,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:59:10,017 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-06 00:59:10,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 00:59:10,063 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 00:59:10,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:59:10,071 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 00:59:10,075 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-06 00:59:10,111 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-06 00:59:10,111 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:59:10,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 00:59:10,114 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 00:59:10,116 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:59:11,580 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-10-06 00:59:11,580 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-10-06 00:59:11,584 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 00:59:11,609 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 00:59:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 00:59:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:59:11,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:11,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:11,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-06 00:59:11,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:11,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808023426] [2020-10-06 00:59:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:11,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808023426] [2020-10-06 00:59:11,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:11,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 00:59:11,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1042838684] [2020-10-06 00:59:11,891 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:11,894 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:11,910 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:59:11,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:11,917 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:59:11,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:59:11,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:11,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:59:11,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:59:11,937 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 00:59:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:12,006 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-06 00:59:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:59:12,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:59:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:12,035 INFO L225 Difference]: With dead ends: 290 [2020-10-06 00:59:12,035 INFO L226 Difference]: Without dead ends: 226 [2020-10-06 00:59:12,037 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 [2020-10-06 00:59:12,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-06 00:59:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-06 00:59:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-06 00:59:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-06 00:59:12,144 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-06 00:59:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:12,145 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-06 00:59:12,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:59:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-06 00:59:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:59:12,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:12,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:12,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:59:12,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:12,153 INFO L82 PathProgramCache]: Analyzing trace with hash 956609449, now seen corresponding path program 1 times [2020-10-06 00:59:12,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:12,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021478941] [2020-10-06 00:59:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:12,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021478941] [2020-10-06 00:59:12,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:12,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 00:59:12,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [565119475] [2020-10-06 00:59:12,224 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:12,225 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:12,227 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-06 00:59:12,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:12,252 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:59:12,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:59:12,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:12,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:59:12,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:59:12,255 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-06 00:59:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:12,263 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-10-06 00:59:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:59:12,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 00:59:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:12,269 INFO L225 Difference]: With dead ends: 212 [2020-10-06 00:59:12,269 INFO L226 Difference]: Without dead ends: 212 [2020-10-06 00:59:12,270 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 [2020-10-06 00:59:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-06 00:59:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-10-06 00:59:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-06 00:59:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-10-06 00:59:12,287 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-10-06 00:59:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:12,287 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-10-06 00:59:12,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:59:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-10-06 00:59:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 00:59:12,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:12,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:12,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:59:12,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash -409878926, now seen corresponding path program 1 times [2020-10-06 00:59:12,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:12,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440722088] [2020-10-06 00:59:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:12,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440722088] [2020-10-06 00:59:12,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:12,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:59:12,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1905868738] [2020-10-06 00:59:12,411 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:12,412 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:12,414 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-10-06 00:59:12,415 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:12,448 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:59:12,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:59:12,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:12,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:59:12,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:59:12,450 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-10-06 00:59:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:12,483 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-06 00:59:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 00:59:12,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-06 00:59:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:12,486 INFO L225 Difference]: With dead ends: 242 [2020-10-06 00:59:12,486 INFO L226 Difference]: Without dead ends: 146 [2020-10-06 00:59:12,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:59:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-06 00:59:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-06 00:59:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-06 00:59:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-06 00:59:12,501 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-06 00:59:12,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:12,502 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-06 00:59:12,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:59:12,502 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-06 00:59:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:59:12,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:12,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:12,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:59:12,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:12,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-06 00:59:12,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:12,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184211758] [2020-10-06 00:59:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:12,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184211758] [2020-10-06 00:59:12,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:12,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 00:59:12,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1539710131] [2020-10-06 00:59:12,548 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:12,549 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:12,551 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-06 00:59:12,551 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:12,575 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:59:12,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:59:12,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:12,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:59:12,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:59:12,576 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-06 00:59:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:12,582 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-10-06 00:59:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:59:12,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:59:12,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:12,584 INFO L225 Difference]: With dead ends: 140 [2020-10-06 00:59:12,584 INFO L226 Difference]: Without dead ends: 140 [2020-10-06 00:59:12,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:59:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-06 00:59:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-06 00:59:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-06 00:59:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-10-06 00:59:12,593 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-10-06 00:59:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:12,593 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-10-06 00:59:12,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:59:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-10-06 00:59:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:59:12,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:12,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:12,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 00:59:12,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:12,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1352113053, now seen corresponding path program 1 times [2020-10-06 00:59:12,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:12,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221476900] [2020-10-06 00:59:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:12,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221476900] [2020-10-06 00:59:12,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:12,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:59:12,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1472606135] [2020-10-06 00:59:12,675 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:12,676 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:12,680 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 47 transitions. [2020-10-06 00:59:12,680 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:12,764 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:59:12,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:59:12,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:59:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:59:12,765 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-10-06 00:59:12,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:12,791 INFO L93 Difference]: Finished difference Result 200 states and 485 transitions. [2020-10-06 00:59:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 00:59:12,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 00:59:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:12,792 INFO L225 Difference]: With dead ends: 200 [2020-10-06 00:59:12,793 INFO L226 Difference]: Without dead ends: 110 [2020-10-06 00:59:12,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:59:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-06 00:59:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-06 00:59:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-06 00:59:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-10-06 00:59:12,799 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 12 [2020-10-06 00:59:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:12,800 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-10-06 00:59:12,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:59:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-10-06 00:59:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:59:12,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:12,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:12,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 00:59:12,802 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2097233879, now seen corresponding path program 2 times [2020-10-06 00:59:12,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:12,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440509206] [2020-10-06 00:59:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:12,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440509206] [2020-10-06 00:59:12,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:12,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:59:12,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1573664508] [2020-10-06 00:59:12,869 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:12,871 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:12,874 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-10-06 00:59:12,874 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:12,902 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:59:12,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:59:12,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:12,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:59:12,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:59:12,904 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 4 states. [2020-10-06 00:59:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:12,925 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-10-06 00:59:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 00:59:12,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 00:59:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:12,927 INFO L225 Difference]: With dead ends: 128 [2020-10-06 00:59:12,927 INFO L226 Difference]: Without dead ends: 68 [2020-10-06 00:59:12,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:59:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-06 00:59:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-06 00:59:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-06 00:59:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-06 00:59:12,932 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-06 00:59:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:12,932 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-06 00:59:12,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:59:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-06 00:59:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 00:59:12,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:12,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:12,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 00:59:12,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:12,934 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-10-06 00:59:12,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:12,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997028805] [2020-10-06 00:59:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:12,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997028805] [2020-10-06 00:59:12,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:12,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:59:12,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [281307644] [2020-10-06 00:59:12,990 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:12,991 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:12,995 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-06 00:59:12,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:13,014 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 00:59:13,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 00:59:13,078 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 00:59:13,106 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 00:59:13,124 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 00:59:13,148 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3724#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-06 00:59:13,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 00:59:13,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 00:59:13,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:59:13,149 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 5 states. [2020-10-06 00:59:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:13,217 INFO L93 Difference]: Finished difference Result 67 states and 126 transitions. [2020-10-06 00:59:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 00:59:13,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-06 00:59:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:13,218 INFO L225 Difference]: With dead ends: 67 [2020-10-06 00:59:13,218 INFO L226 Difference]: Without dead ends: 45 [2020-10-06 00:59:13,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-06 00:59:13,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-06 00:59:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-06 00:59:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-06 00:59:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-06 00:59:13,222 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 13 [2020-10-06 00:59:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:13,222 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-06 00:59:13,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 00:59:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-06 00:59:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:59:13,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:13,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:13,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 00:59:13,224 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:13,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-06 00:59:13,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:13,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131922245] [2020-10-06 00:59:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:13,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131922245] [2020-10-06 00:59:13,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:13,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 00:59:13,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1775590629] [2020-10-06 00:59:13,318 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:13,320 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:13,324 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-06 00:59:13,324 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:13,360 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 00:59:13,369 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3892#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 00:59:13,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 00:59:13,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:13,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 00:59:13,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 00:59:13,371 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 7 states. [2020-10-06 00:59:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:13,422 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-06 00:59:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 00:59:13,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 00:59:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:13,423 INFO L225 Difference]: With dead ends: 42 [2020-10-06 00:59:13,424 INFO L226 Difference]: Without dead ends: 36 [2020-10-06 00:59:13,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-06 00:59:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-06 00:59:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-06 00:59:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-06 00:59:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-06 00:59:13,426 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-06 00:59:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:13,426 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-06 00:59:13,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 00:59:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-06 00:59:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:59:13,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:59:13,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:59:13,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 00:59:13,428 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:59:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:59:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-06 00:59:13,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:59:13,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392553413] [2020-10-06 00:59:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:59:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:59:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:59:13,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392553413] [2020-10-06 00:59:13,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:59:13,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:59:13,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1518352225] [2020-10-06 00:59:13,457 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:59:13,458 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:59:13,463 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-10-06 00:59:13,463 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:59:13,466 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:59:13,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:59:13,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:59:13,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:59:13,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:59:13,468 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-06 00:59:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:59:13,472 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-06 00:59:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:59:13,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-06 00:59:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:59:13,473 INFO L225 Difference]: With dead ends: 35 [2020-10-06 00:59:13,473 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 00:59:13,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:59:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 00:59:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 00:59:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 00:59:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 00:59:13,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 00:59:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:59:13,475 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 00:59:13,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:59:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 00:59:13,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 00:59:13,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 00:59:13,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:59:13 BasicIcfg [2020-10-06 00:59:13,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:59:13,482 INFO L168 Benchmark]: Toolchain (without parser) took 4811.82 ms. Allocated memory was 140.0 MB in the beginning and 249.0 MB in the end (delta: 109.1 MB). Free memory was 101.1 MB in the beginning and 130.7 MB in the end (delta: -29.5 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2020-10-06 00:59:13,483 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-06 00:59:13,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.79 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 157.6 MB in the end (delta: -56.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-06 00:59:13,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.21 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 00:59:13,486 INFO L168 Benchmark]: Boogie Preprocessor took 26.03 ms. Allocated memory is still 202.9 MB. Free memory was 155.6 MB in the beginning and 153.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 00:59:13,487 INFO L168 Benchmark]: RCFGBuilder took 402.37 ms. Allocated memory is still 202.9 MB. Free memory was 153.7 MB in the beginning and 131.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-06 00:59:13,487 INFO L168 Benchmark]: TraceAbstraction took 3613.06 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 130.8 MB in the beginning and 130.7 MB in the end (delta: 101.0 kB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-10-06 00:59:13,492 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.79 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 157.6 MB in the end (delta: -56.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.21 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.03 ms. Allocated memory is still 202.9 MB. Free memory was 155.6 MB in the beginning and 153.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.37 ms. Allocated memory is still 202.9 MB. Free memory was 153.7 MB in the beginning and 131.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3613.06 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 130.8 MB in the beginning and 130.7 MB in the end (delta: 101.0 kB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 158 SDtfs, 102 SDslu, 167 SDs, 0 SdLazy, 102 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...