/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:44,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:44,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:44,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:44,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:44,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:44,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:44,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:44,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:44,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:44,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:44,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:44,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:44,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:44,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:44,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:44,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:44,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:44,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:44,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:44,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:44,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:44,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:44,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:44,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:44,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:44,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:44,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:44,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:44,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:44,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:44,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:44,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:44,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:44,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:44,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:44,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:44,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:44,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:44,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:44,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:44,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:27:44,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:44,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:44,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:44,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:44,557 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:44,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:44,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:44,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:44,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:44,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:44,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:44,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:44,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:44,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:44,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:44,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:44,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:44,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:44,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:44,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:44,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:44,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:44,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:44,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:44,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:44,562 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:44,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:44,563 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:44,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:44,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:44,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:44,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:44,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:44,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:44,884 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:44,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-04-18 11:27:44,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba84b9ec/dd498f122ab7408eb8bd379fedf20df3/FLAG4c3384e49 [2020-04-18 11:27:45,578 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:45,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-04-18 11:27:45,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba84b9ec/dd498f122ab7408eb8bd379fedf20df3/FLAG4c3384e49 [2020-04-18 11:27:45,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba84b9ec/dd498f122ab7408eb8bd379fedf20df3 [2020-04-18 11:27:45,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:45,838 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:45,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:45,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:45,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:45,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748702d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45, skipping insertion in model container [2020-04-18 11:27:45,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:45,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:46,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:46,360 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:46,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:46,583 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:46,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46 WrapperNode [2020-04-18 11:27:46,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:46,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:46,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:46,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:46,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:46,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:46,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:46,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:46,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... [2020-04-18 11:27:46,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:46,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:46,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:46,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:46,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:46,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:46,742 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:46,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:46,742 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:27:46,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:27:46,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:46,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:46,744 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:27:47,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:47,155 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:47,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:47 BoogieIcfgContainer [2020-04-18 11:27:47,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:47,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:47,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:47,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:47,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:45" (1/3) ... [2020-04-18 11:27:47,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c1242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:47, skipping insertion in model container [2020-04-18 11:27:47,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:46" (2/3) ... [2020-04-18 11:27:47,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c1242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:47, skipping insertion in model container [2020-04-18 11:27:47,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:47" (3/3) ... [2020-04-18 11:27:47,168 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_rmo.opt.i [2020-04-18 11:27:47,180 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:47,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:47,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:47,190 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:47,218 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,219 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,219 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,219 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,221 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,221 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,221 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,222 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,222 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,222 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,223 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,223 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,224 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,224 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,224 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,225 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,229 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,230 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,230 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,230 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,236 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,237 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,237 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,237 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,240 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,240 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,240 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,241 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:47,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:27:47,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:47,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:47,281 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:47,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:47,281 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:47,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:47,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:47,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:47,298 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:47,301 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:47,348 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:47,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:47,358 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:47,361 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:47,383 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:47,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:47,384 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:47,387 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:27:47,388 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:48,840 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 11:27:48,944 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-04-18 11:27:48,944 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:27:48,948 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 11:27:48,975 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 11:27:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 11:27:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:48,985 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:48,986 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:48,986 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:48,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,992 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-04-18 11:27:48,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:48,999 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1150590685] [2020-04-18 11:27:49,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,029 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:27:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:49,031 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,032 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 2 times [2020-04-18 11:27:49,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255864607] [2020-04-18 11:27:49,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:49,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255864607] [2020-04-18 11:27:49,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:49,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:49,203 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:49,203 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:49,206 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:49,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:49,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:49,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:49,215 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:27:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,218 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:27:49,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:27:49,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:49,220 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1150590685] [2020-04-18 11:27:49,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:49,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:49,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1150590685] [2020-04-18 11:27:49,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:27:49,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:49,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:49,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:49,228 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 11:27:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,248 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 11:27:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:27:49,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:27:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:49,269 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:27:49,270 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 11:27:49,271 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 11:27:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 11:27:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 11:27:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 11:27:49,343 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 11:27:49,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:49,345 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 11:27:49,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:27:49,345 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 11:27:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:49,347 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:49,347 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:49,347 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-04-18 11:27:49,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:49,348 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2080881131] [2020-04-18 11:27:49,349 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,350 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:27:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:49,351 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,365 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 2 times [2020-04-18 11:27:49,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727126890] [2020-04-18 11:27:49,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:49,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727126890] [2020-04-18 11:27:49,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:49,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:49,476 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:49,476 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:49,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:49,483 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:49,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:49,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:49,484 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 11:27:49,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,485 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:27:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:27:49,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:49,486 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2080881131] [2020-04-18 11:27:49,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:49,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:49,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2080881131] [2020-04-18 11:27:49,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:27:49,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:49,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:49,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:49,488 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 11:27:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,521 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 11:27:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:27:49,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:27:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:49,524 INFO L225 Difference]: With dead ends: 217 [2020-04-18 11:27:49,524 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 11:27:49,526 INFO L678 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 [2020-04-18 11:27:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 11:27:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 11:27:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 11:27:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 11:27:49,545 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 11:27:49,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:49,546 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 11:27:49,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:27:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 11:27:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:49,549 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:49,549 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:49,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:49,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-04-18 11:27:49,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:49,551 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [399422418] [2020-04-18 11:27:49,552 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,553 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 11:27:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:27:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:49,554 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 2 times [2020-04-18 11:27:49,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729103157] [2020-04-18 11:27:49,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:49,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729103157] [2020-04-18 11:27:49,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:49,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:49,632 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:49,633 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,635 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 11:27:49,635 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:49,645 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:49,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:49,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:49,646 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 11:27:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,652 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-04-18 11:27:49,653 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2020-04-18 11:27:49,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:49,654 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [399422418] [2020-04-18 11:27:49,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:49,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:49,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [399422418] [2020-04-18 11:27:49,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:49,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:49,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:49,655 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-18 11:27:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,682 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 11:27:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:27:49,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 11:27:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:49,685 INFO L225 Difference]: With dead ends: 136 [2020-04-18 11:27:49,685 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 11:27:49,686 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 11:27:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 11:27:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 11:27:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 11:27:49,708 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 11:27:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:49,708 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 11:27:49,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 11:27:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:49,712 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:49,712 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:49,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-04-18 11:27:49,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:49,713 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [21795760] [2020-04-18 11:27:49,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,718 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 174 transitions. [2020-04-18 11:27:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 11:27:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:49,720 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,721 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 2 times [2020-04-18 11:27:49,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138177947] [2020-04-18 11:27:49,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:49,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138177947] [2020-04-18 11:27:49,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:49,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:49,808 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:49,810 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,813 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 11:27:49,814 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:49,828 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:49,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:49,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:49,829 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 5 states. [2020-04-18 11:27:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,846 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 11:27:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 11:27:49,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:49,848 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [21795760] [2020-04-18 11:27:49,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:49,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:49,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [21795760] [2020-04-18 11:27:49,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:27:49,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:49,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:49,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:49,851 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 11:27:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,890 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 11:27:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:27:49,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 11:27:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:49,892 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:27:49,892 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 11:27:49,892 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 11:27:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 11:27:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 11:27:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 11:27:49,899 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 11:27:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:49,901 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 11:27:49,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:27:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 11:27:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:49,904 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:49,905 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:49,905 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-04-18 11:27:49,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:49,907 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1728533050] [2020-04-18 11:27:49,908 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 11:27:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:27:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:49,930 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 2 times [2020-04-18 11:27:49,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43499351] [2020-04-18 11:27:49,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:50,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43499351] [2020-04-18 11:27:50,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:50,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:50,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:50,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:50,046 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 11:27:50,046 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:50,077 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:27:50,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:50,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:50,078 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 11:27:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:50,120 INFO L93 Difference]: Finished difference Result 442 states and 1236 transitions. [2020-04-18 11:27:50,120 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1236 transitions. [2020-04-18 11:27:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:50,122 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:50,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:50,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1847699439, now seen corresponding path program 3 times [2020-04-18 11:27:50,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:50,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060740677] [2020-04-18 11:27:50,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:50,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060740677] [2020-04-18 11:27:50,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:50,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:50,193 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:50,194 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:50,202 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 11:27:50,202 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:50,233 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:50,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:50,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:27:50,234 INFO L87 Difference]: Start difference. First operand 442 states and 1236 transitions. Second operand 5 states. [2020-04-18 11:27:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:50,285 INFO L93 Difference]: Finished difference Result 448 states and 1240 transitions. [2020-04-18 11:27:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1240 transitions. [2020-04-18 11:27:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:50,287 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:50,288 INFO L82 PathProgramCache]: Analyzing trace with hash -739037833, now seen corresponding path program 4 times [2020-04-18 11:27:50,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:50,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935922654] [2020-04-18 11:27:50,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:50,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935922654] [2020-04-18 11:27:50,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:50,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:50,365 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:50,366 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:50,377 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 11:27:50,377 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:50,408 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:50,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:27:50,410 INFO L87 Difference]: Start difference. First operand 448 states and 1240 transitions. Second operand 5 states. [2020-04-18 11:27:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:50,471 INFO L93 Difference]: Finished difference Result 718 states and 1888 transitions. [2020-04-18 11:27:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1888 transitions. [2020-04-18 11:27:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:50,475 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:50,475 INFO L82 PathProgramCache]: Analyzing trace with hash -845563335, now seen corresponding path program 5 times [2020-04-18 11:27:50,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:50,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916795201] [2020-04-18 11:27:50,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:27:50,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916795201] [2020-04-18 11:27:50,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:50,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:50,578 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:50,580 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:50,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-04-18 11:27:50,588 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:50,716 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:27:50,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:27:50,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:27:50,717 INFO L87 Difference]: Start difference. First operand 718 states and 1888 transitions. Second operand 6 states. [2020-04-18 11:27:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:50,791 INFO L93 Difference]: Finished difference Result 1235 states and 3060 transitions. [2020-04-18 11:27:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3060 transitions. [2020-04-18 11:27:50,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:50,795 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1728533050] [2020-04-18 11:27:50,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:50,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:50,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1728533050] [2020-04-18 11:27:50,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:27:50,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:50,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:27:50,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:27:50,798 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 13 states. [2020-04-18 11:27:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:52,364 INFO L93 Difference]: Finished difference Result 240 states and 478 transitions. [2020-04-18 11:27:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 11:27:52,365 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 11:27:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:52,365 INFO L225 Difference]: With dead ends: 240 [2020-04-18 11:27:52,365 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:52,368 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1248, Invalid=5232, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 11:27:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:52,369 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 11:27:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:52,369 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:52,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:27:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:52,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:52,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:52 BasicIcfg [2020-04-18 11:27:52,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:52,376 INFO L168 Benchmark]: Toolchain (without parser) took 6556.99 ms. Allocated memory was 138.9 MB in the beginning and 300.9 MB in the end (delta: 162.0 MB). Free memory was 102.3 MB in the beginning and 230.5 MB in the end (delta: -128.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:52,377 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:52,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.46 ms. Allocated memory was 138.9 MB in the beginning and 228.6 MB in the end (delta: 89.7 MB). Free memory was 100.4 MB in the beginning and 194.4 MB in the end (delta: -94.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:52,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 228.6 MB. Free memory was 194.4 MB in the beginning and 191.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:52,379 INFO L168 Benchmark]: Boogie Preprocessor took 36.13 ms. Allocated memory is still 228.6 MB. Free memory was 191.5 MB in the beginning and 190.6 MB in the end (delta: 920.4 kB). Peak memory consumption was 920.4 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:52,380 INFO L168 Benchmark]: RCFGBuilder took 478.25 ms. Allocated memory is still 228.6 MB. Free memory was 190.6 MB in the beginning and 167.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:52,381 INFO L168 Benchmark]: TraceAbstraction took 5213.00 ms. Allocated memory was 228.6 MB in the beginning and 300.9 MB in the end (delta: 72.4 MB). Free memory was 167.0 MB in the beginning and 230.5 MB in the end (delta: -63.5 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:52,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.46 ms. Allocated memory was 138.9 MB in the beginning and 228.6 MB in the end (delta: 89.7 MB). Free memory was 100.4 MB in the beginning and 194.4 MB in the end (delta: -94.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 228.6 MB. Free memory was 194.4 MB in the beginning and 191.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.13 ms. Allocated memory is still 228.6 MB. Free memory was 191.5 MB in the beginning and 190.6 MB in the end (delta: 920.4 kB). Peak memory consumption was 920.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 478.25 ms. Allocated memory is still 228.6 MB. Free memory was 190.6 MB in the beginning and 167.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5213.00 ms. Allocated memory was 228.6 MB in the beginning and 300.9 MB in the end (delta: 72.4 MB). Free memory was 167.0 MB in the beginning and 230.5 MB in the end (delta: -63.5 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 663 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2315 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 106 SDtfs, 192 SDslu, 293 SDs, 0 SdLazy, 349 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...