/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/thin001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:28:51,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:28:51,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:28:51,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:28:51,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:28:51,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:28:51,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:28:51,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:28:51,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:28:51,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:28:51,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:28:51,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:28:51,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:28:51,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:28:51,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:28:51,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:28:51,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:28:51,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:28:51,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:28:51,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:28:51,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:28:51,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:28:51,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:28:51,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:28:51,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:28:51,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:28:51,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:28:51,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:28:51,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:28:51,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:28:51,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:28:51,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:28:51,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:28:51,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:28:51,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:28:51,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:28:51,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:28:51,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:28:51,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:28:51,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:28:51,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:28:51,613 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 11:28:51,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:28:51,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:28:51,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:28:51,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:28:51,645 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:28:51,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:28:51,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:28:51,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:28:51,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:28:51,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:28:51,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:28:51,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:28:51,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:28:51,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:28:51,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:28:51,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:28:51,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:28:51,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:28:51,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:28:51,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:28:51,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:28:51,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:28:51,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:28:51,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:28:51,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:28:51,649 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:28:51,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:28:51,649 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:28:51,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:28:51,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:28:51,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:28:51,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:28:51,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:28:51,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:28:51,938 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:28:51,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-04-18 11:28:52,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641f4ebeb/73d60227e06b415dae1da1f914e84348/FLAG15d07e743 [2020-04-18 11:28:52,529 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:28:52,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-04-18 11:28:52,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641f4ebeb/73d60227e06b415dae1da1f914e84348/FLAG15d07e743 [2020-04-18 11:28:52,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641f4ebeb/73d60227e06b415dae1da1f914e84348 [2020-04-18 11:28:52,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:28:52,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:28:52,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:28:52,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:28:52,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:28:52,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:28:52" (1/1) ... [2020-04-18 11:28:52,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bea890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:52, skipping insertion in model container [2020-04-18 11:28:52,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:28:52" (1/1) ... [2020-04-18 11:28:52,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:28:52,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:28:53,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:28:53,429 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:28:53,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:28:53,595 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:28:53,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53 WrapperNode [2020-04-18 11:28:53,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:28:53,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:28:53,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:28:53,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:28:53,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:28:53,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:28:53,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:28:53,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:28:53,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (1/1) ... [2020-04-18 11:28:53,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:28:53,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:28:53,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:28:53,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:28:53,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (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 11:28:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:28:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:28:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:28:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:28:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:28:53,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:28:53,754 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:28:53,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:28:53,754 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:28:53,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:28:53,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:28:53,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:28:53,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:28:53,757 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 11:28:54,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:28:54,161 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:28:54,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:28:54 BoogieIcfgContainer [2020-04-18 11:28:54,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:28:54,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:28:54,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:28:54,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:28:54,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:28:52" (1/3) ... [2020-04-18 11:28:54,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6a553c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:28:54, skipping insertion in model container [2020-04-18 11:28:54,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:53" (2/3) ... [2020-04-18 11:28:54,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6a553c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:28:54, skipping insertion in model container [2020-04-18 11:28:54,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:28:54" (3/3) ... [2020-04-18 11:28:54,175 INFO L109 eAbstractionObserver]: Analyzing ICFG thin001_tso.opt.i [2020-04-18 11:28:54,186 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:28:54,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:28:54,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:28:54,195 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:28:54,223 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,223 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,224 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,224 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,225 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,225 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,226 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,226 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,226 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,226 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,227 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,227 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,228 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,228 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,229 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,229 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,233 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,234 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,234 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,234 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,240 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,242 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,242 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,242 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,245 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,245 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,245 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,246 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:54,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:28:54,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:28:54,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:28:54,282 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:28:54,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:28:54,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:28:54,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:28:54,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:28:54,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:28:54,298 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 11:28:54,300 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:28:54,340 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:28:54,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:28:54,349 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 51 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 11:28:54,353 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:28:54,381 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:28:54,382 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:28:54,382 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 51 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 11:28:54,384 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:28:54,386 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:28:55,933 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 11:28:56,046 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 11:28:56,047 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:28:56,051 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 11:28:56,090 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 11:28:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 11:28:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:28:56,102 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:56,103 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:56,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 11:28:56,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:56,119 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1456053867] [2020-04-18 11:28:56,131 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:56,142 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:28:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:28:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:28:56,145 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 2 times [2020-04-18 11:28:56,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:56,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131340273] [2020-04-18 11:28:56,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:56,313 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 11:28:56,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131340273] [2020-04-18 11:28:56,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:56,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:28:56,316 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:56,317 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:56,319 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:28:56,320 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:56,323 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:28:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:28:56,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:28:56,329 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:28:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:56,339 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:28:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:28:56,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:56,341 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1456053867] [2020-04-18 11:28:56,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:56,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:28:56,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1456053867] [2020-04-18 11:28:56,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:28:56,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:56,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:28:56,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:28:56,350 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 11:28:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:56,375 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 11:28:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:28:56,377 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:28:56,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:56,393 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:28:56,393 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 11:28:56,395 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 11:28:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 11:28:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 11:28:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 11:28:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 11:28:56,492 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 11:28:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:56,494 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 11:28:56,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:28:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 11:28:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:28:56,495 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:56,496 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:56,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 11:28:56,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:56,497 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1803322714] [2020-04-18 11:28:56,497 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:56,498 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:28:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:28:56,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:28:56,499 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:56,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:56,499 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 2 times [2020-04-18 11:28:56,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:56,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075658548] [2020-04-18 11:28:56,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:56,660 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 11:28:56,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075658548] [2020-04-18 11:28:56,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:56,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:56,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:56,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:56,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:28:56,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:56,682 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:28:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:56,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:28:56,683 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-04-18 11:28:56,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:56,703 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:28:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:28:56,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:56,704 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1803322714] [2020-04-18 11:28:56,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:56,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:28:56,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1803322714] [2020-04-18 11:28:56,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:28:56,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:56,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:56,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:28:56,706 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-04-18 11:28:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:56,758 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 11:28:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:28:56,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:28:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:56,765 INFO L225 Difference]: With dead ends: 330 [2020-04-18 11:28:56,765 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 11:28:56,769 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:28:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 11:28:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 11:28:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 11:28:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 11:28:56,798 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 11:28:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:56,798 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 11:28:56,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:28:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 11:28:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:28:56,800 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:56,800 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:56,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:56,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 1 times [2020-04-18 11:28:56,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:56,801 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1086361096] [2020-04-18 11:28:56,802 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:56,802 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-04-18 11:28:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 11:28:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:28:56,803 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 2 times [2020-04-18 11:28:56,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:56,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005872705] [2020-04-18 11:28:56,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:56,949 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 11:28:56,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005872705] [2020-04-18 11:28:56,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:56,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:28:56,951 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:56,952 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:56,953 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 11:28:56,953 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:57,063 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:28:57,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:28:57,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:28:57,064 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 8 states. [2020-04-18 11:28:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:57,103 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2020-04-18 11:28:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2020-04-18 11:28:57,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:57,104 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1086361096] [2020-04-18 11:28:57,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:57,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:28:57,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1086361096] [2020-04-18 11:28:57,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:28:57,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:57,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:28:57,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:28:57,108 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 8 states. [2020-04-18 11:28:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:57,276 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-04-18 11:28:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 11:28:57,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-04-18 11:28:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:57,278 INFO L225 Difference]: With dead ends: 314 [2020-04-18 11:28:57,278 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 11:28:57,279 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:28:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 11:28:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 11:28:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 11:28:57,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-04-18 11:28:57,288 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 10 [2020-04-18 11:28:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:57,289 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-04-18 11:28:57,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:28:57,289 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-04-18 11:28:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:28:57,290 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:57,290 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:57,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:57,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:57,291 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-18 11:28:57,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:57,291 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [864544586] [2020-04-18 11:28:57,292 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:57,293 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 11:28:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:28:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:28:57,294 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1046934219, now seen corresponding path program 2 times [2020-04-18 11:28:57,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:57,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253398406] [2020-04-18 11:28:57,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:57,389 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 11:28:57,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253398406] [2020-04-18 11:28:57,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:57,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:28:57,392 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:57,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:57,395 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2020-04-18 11:28:57,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:57,501 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:28:57,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:28:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:28:57,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:28:57,562 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 9 states. [2020-04-18 11:28:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:57,643 INFO L93 Difference]: Finished difference Result 39 states and 64 transitions. [2020-04-18 11:28:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2020-04-18 11:28:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:28:57,644 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:28:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 3 times [2020-04-18 11:28:57,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:57,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177906443] [2020-04-18 11:28:57,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:57,742 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 11:28:57,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177906443] [2020-04-18 11:28:57,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:57,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:57,743 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:57,745 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:57,747 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 11:28:57,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:57,775 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:28:57,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:28:57,776 INFO L87 Difference]: Start difference. First operand 39 states and 64 transitions. Second operand 5 states. [2020-04-18 11:28:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:57,798 INFO L93 Difference]: Finished difference Result 39 states and 64 transitions. [2020-04-18 11:28:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2020-04-18 11:28:57,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:57,799 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [864544586] [2020-04-18 11:28:57,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:57,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:28:57,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [864544586] [2020-04-18 11:28:57,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:28:57,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:28:57,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:28:57,802 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 11 states. [2020-04-18 11:28:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:57,945 INFO L93 Difference]: Finished difference Result 152 states and 368 transitions. [2020-04-18 11:28:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 11:28:57,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-04-18 11:28:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:57,948 INFO L225 Difference]: With dead ends: 152 [2020-04-18 11:28:57,948 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 11:28:57,949 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:28:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 11:28:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 11:28:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 11:28:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-04-18 11:28:57,955 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 12 [2020-04-18 11:28:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:57,956 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-04-18 11:28:57,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:28:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-04-18 11:28:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:28:57,957 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:57,957 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:57,957 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:57,958 INFO L82 PathProgramCache]: Analyzing trace with hash -762243594, now seen corresponding path program 1 times [2020-04-18 11:28:57,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:57,958 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1987555257] [2020-04-18 11:28:57,959 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:57,960 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 140 transitions. [2020-04-18 11:28:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 11:28:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:28:57,962 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1574640642, now seen corresponding path program 2 times [2020-04-18 11:28:57,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:57,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55051521] [2020-04-18 11:28:57,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:58,058 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 11:28:58,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55051521] [2020-04-18 11:28:58,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:58,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:58,060 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:58,061 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:58,066 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 70 transitions. [2020-04-18 11:28:58,067 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:58,080 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:28:58,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:58,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:28:58,081 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 5 states. [2020-04-18 11:28:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:58,104 INFO L93 Difference]: Finished difference Result 62 states and 140 transitions. [2020-04-18 11:28:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 140 transitions. [2020-04-18 11:28:58,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:58,105 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1987555257] [2020-04-18 11:28:58,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:58,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:28:58,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1987555257] [2020-04-18 11:28:58,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:28:58,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:58,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:58,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:28:58,107 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 5 states. [2020-04-18 11:28:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:58,133 INFO L93 Difference]: Finished difference Result 170 states and 409 transitions. [2020-04-18 11:28:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:28:58,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:28:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:58,134 INFO L225 Difference]: With dead ends: 170 [2020-04-18 11:28:58,134 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 11:28:58,135 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:28:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 11:28:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 11:28:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 11:28:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-18 11:28:58,139 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-04-18 11:28:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:58,140 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-18 11:28:58,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:28:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-18 11:28:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:28:58,140 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:58,141 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:58,141 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:58,141 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-18 11:28:58,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:58,142 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2018154098] [2020-04-18 11:28:58,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:58,144 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 220 transitions. [2020-04-18 11:28:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 11:28:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:28:58,146 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:58,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:58,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1571173060, now seen corresponding path program 2 times [2020-04-18 11:28:58,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:58,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310843728] [2020-04-18 11:28:58,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:58,211 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 11:28:58,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310843728] [2020-04-18 11:28:58,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:58,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:58,212 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:58,214 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:58,219 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 93 transitions. [2020-04-18 11:28:58,219 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:58,237 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:28:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:58,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:28:58,238 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 5 states. [2020-04-18 11:28:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:58,281 INFO L93 Difference]: Finished difference Result 110 states and 256 transitions. [2020-04-18 11:28:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 256 transitions. [2020-04-18 11:28:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:28:58,282 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:28:58,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:58,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1942674216, now seen corresponding path program 3 times [2020-04-18 11:28:58,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:58,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374599816] [2020-04-18 11:28:58,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:58,368 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 11:28:58,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374599816] [2020-04-18 11:28:58,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:58,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:58,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:58,371 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:58,377 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 71 transitions. [2020-04-18 11:28:58,378 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:58,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:28:58,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:58,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:28:58,398 INFO L87 Difference]: Start difference. First operand 110 states and 256 transitions. Second operand 5 states. [2020-04-18 11:28:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:58,421 INFO L93 Difference]: Finished difference Result 110 states and 256 transitions. [2020-04-18 11:28:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 256 transitions. [2020-04-18 11:28:58,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:58,422 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2018154098] [2020-04-18 11:28:58,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:58,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:28:58,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2018154098] [2020-04-18 11:28:58,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:28:58,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:58,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:28:58,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:28:58,424 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 7 states. [2020-04-18 11:28:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:58,471 INFO L93 Difference]: Finished difference Result 68 states and 144 transitions. [2020-04-18 11:28:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:28:58,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 11:28:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:58,472 INFO L225 Difference]: With dead ends: 68 [2020-04-18 11:28:58,472 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:28:58,472 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:28:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:28:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:28:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:28:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:28:58,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 11:28:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:58,474 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:28:58,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:28:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:28:58,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:58,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:28:58 BasicIcfg [2020-04-18 11:28:58,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:28:58,480 INFO L168 Benchmark]: Toolchain (without parser) took 5637.82 ms. Allocated memory was 146.3 MB in the beginning and 276.8 MB in the end (delta: 130.5 MB). Free memory was 101.5 MB in the beginning and 206.1 MB in the end (delta: -104.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:58,485 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:28:58,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.42 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.6 MB in the beginning and 160.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:58,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.50 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:58,489 INFO L168 Benchmark]: Boogie Preprocessor took 31.74 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:58,495 INFO L168 Benchmark]: RCFGBuilder took 473.14 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:58,496 INFO L168 Benchmark]: TraceAbstraction took 4310.98 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 133.8 MB in the beginning and 206.1 MB in the end (delta: -72.3 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:58,504 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.42 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.6 MB in the beginning and 160.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.50 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.74 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.14 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4310.98 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 133.8 MB in the beginning and 206.1 MB in the end (delta: -72.3 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 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: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 114 SDtfs, 300 SDslu, 248 SDs, 0 SdLazy, 151 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s 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, 6 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...