/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/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:49:39,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:49:39,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:49:39,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:49:39,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:49:39,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:49:39,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:49:39,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:49:39,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:49:39,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:49:39,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:49:39,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:49:39,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:49:39,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:49:39,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:49:39,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:49:39,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:49:39,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:49:39,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:49:39,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:49:39,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:49:39,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:49:39,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:49:39,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:49:39,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:49:39,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:49:39,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:49:39,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:49:39,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:49:39,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:49:39,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:49:39,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:49:39,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:49:39,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:49:39,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:49:39,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:49:39,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:49:39,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:49:39,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:49:39,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:49:39,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:49:39,917 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 10:49:39,936 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:49:39,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:49:39,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:49:39,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:49:39,939 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:49:39,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:49:39,939 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:49:39,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:49:39,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:49:39,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:49:39,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:49:39,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:49:39,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:49:39,940 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:49:39,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:49:39,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:49:39,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:49:39,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:49:39,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:49:39,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:49:39,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:49:39,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:49:39,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:49:39,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:49:39,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:49:39,943 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:49:39,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:49:39,943 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:49:39,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:49:39,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:49:40,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:49:40,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:49:40,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:49:40,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:49:40,262 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:49:40,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-04-18 10:49:40,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159cc3163/2c1c2cd3666849df92164b59b2bfe8ab/FLAG5d6745cc4 [2020-04-18 10:49:40,878 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:49:40,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-04-18 10:49:40,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159cc3163/2c1c2cd3666849df92164b59b2bfe8ab/FLAG5d6745cc4 [2020-04-18 10:49:41,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159cc3163/2c1c2cd3666849df92164b59b2bfe8ab [2020-04-18 10:49:41,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:49:41,188 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:49:41,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:49:41,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:49:41,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:49:41,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:49:41" (1/1) ... [2020-04-18 10:49:41,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d61e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:41, skipping insertion in model container [2020-04-18 10:49:41,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:49:41" (1/1) ... [2020-04-18 10:49:41,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:49:41,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:49:41,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:49:41,843 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:49:41,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:49:42,009 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:49:42,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42 WrapperNode [2020-04-18 10:49:42,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:49:42,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:49:42,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:49:42,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:49:42,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:49:42,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:49:42,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:49:42,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:49:42,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (1/1) ... [2020-04-18 10:49:42,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:49:42,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:49:42,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:49:42,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:49:42,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (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 10:49:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:49:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:49:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:49:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:49:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:49:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:49:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:49:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:49:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:49:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:49:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:49:42,152 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 10:49:42,531 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:49:42,532 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:49:42,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:49:42 BoogieIcfgContainer [2020-04-18 10:49:42,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:49:42,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:49:42,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:49:42,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:49:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:49:41" (1/3) ... [2020-04-18 10:49:42,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa7ff87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:49:42, skipping insertion in model container [2020-04-18 10:49:42,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:49:42" (2/3) ... [2020-04-18 10:49:42,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa7ff87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:49:42, skipping insertion in model container [2020-04-18 10:49:42,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:49:42" (3/3) ... [2020-04-18 10:49:42,545 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2020-04-18 10:49:42,555 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:49:42,555 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:49:42,561 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:49:42,563 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:49:42,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,586 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,586 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,586 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,587 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,587 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,587 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,588 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,588 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,588 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,588 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,592 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,593 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,593 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,593 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,599 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,599 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,600 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,600 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:49:42,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 10:49:42,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:49:42,632 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:49:42,633 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:49:42,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:49:42,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:49:42,633 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:49:42,633 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:49:42,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:49:42,649 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 10:49:42,651 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 10:49:42,692 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 10:49:42,692 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:49:42,697 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 10:49:42,699 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 10:49:42,717 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 10:49:42,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:49:42,718 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 10:49:42,720 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 10:49:42,721 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:49:44,388 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-04-18 10:49:44,388 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 10:49:44,392 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 10:49:44,405 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 10:49:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 10:49:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 10:49:44,414 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:49:44,415 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 10:49:44,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:49:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:44,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-04-18 10:49:44,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:49:44,429 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1434108093] [2020-04-18 10:49:44,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:44,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 10:49:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 10:49:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 10:49:44,460 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:49:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 2 times [2020-04-18 10:49:44,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:44,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015107842] [2020-04-18 10:49:44,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:44,659 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 10:49:44,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015107842] [2020-04-18 10:49:44,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:44,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:49:44,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:44,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:44,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 10:49:44,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:44,670 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:44,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:44,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:49:44,675 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 10:49:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:44,678 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 10:49:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 10:49:44,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:49:44,679 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1434108093] [2020-04-18 10:49:44,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:49:44,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:49:44,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1434108093] [2020-04-18 10:49:44,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:49:44,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:49:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:49:44,687 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 10:49:44,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:44,726 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-18 10:49:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:49:44,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 10:49:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:49:44,752 INFO L225 Difference]: With dead ends: 72 [2020-04-18 10:49:44,752 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 10:49:44,753 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 10:49:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 10:49:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 10:49:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 10:49:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-18 10:49:44,789 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-18 10:49:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:49:44,789 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-18 10:49:44,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:49:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-18 10:49:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 10:49:44,790 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:49:44,791 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:49:44,791 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:49:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:44,791 INFO L82 PathProgramCache]: Analyzing trace with hash 417556795, now seen corresponding path program 1 times [2020-04-18 10:49:44,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:49:44,792 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1067529652] [2020-04-18 10:49:44,793 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:44,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 15 transitions. [2020-04-18 10:49:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:49:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 10:49:44,795 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:49:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash 417557965, now seen corresponding path program 2 times [2020-04-18 10:49:44,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:44,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856755133] [2020-04-18 10:49:44,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:44,902 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 10:49:44,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856755133] [2020-04-18 10:49:44,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:44,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:44,903 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:44,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:44,909 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 10:49:44,909 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:44,917 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:44,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:44,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:49:44,918 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 10:49:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:44,922 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 10:49:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 10:49:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 10:49:44,923 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:49:44,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:44,923 INFO L82 PathProgramCache]: Analyzing trace with hash 417556795, now seen corresponding path program 3 times [2020-04-18 10:49:44,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:44,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024567453] [2020-04-18 10:49:44,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,002 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 10:49:45,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024567453] [2020-04-18 10:49:45,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:49:45,003 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,004 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,007 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-04-18 10:49:45,007 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,025 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:45,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:49:45,026 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-04-18 10:49:45,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,028 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 10:49:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 10:49:45,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:49:45,029 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1067529652] [2020-04-18 10:49:45,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:49:45,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:49:45,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1067529652] [2020-04-18 10:49:45,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:49:45,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:49:45,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:45,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:49:45,033 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 4 states. [2020-04-18 10:49:45,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,061 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-04-18 10:49:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:49:45,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 10:49:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:49:45,063 INFO L225 Difference]: With dead ends: 53 [2020-04-18 10:49:45,063 INFO L226 Difference]: Without dead ends: 53 [2020-04-18 10:49:45,064 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:49:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-04-18 10:49:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-04-18 10:49:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-04-18 10:49:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-04-18 10:49:45,072 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-04-18 10:49:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:49:45,072 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-04-18 10:49:45,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:49:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-04-18 10:49:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:49:45,073 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:49:45,073 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:49:45,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:49:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-04-18 10:49:45,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:49:45,074 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [111663048] [2020-04-18 10:49:45,075 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,075 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 28 transitions. [2020-04-18 10:49:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 10:49:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:49:45,076 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:49:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,077 INFO L82 PathProgramCache]: Analyzing trace with hash 58789022, now seen corresponding path program 2 times [2020-04-18 10:49:45,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255835056] [2020-04-18 10:49:45,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,127 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 10:49:45,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255835056] [2020-04-18 10:49:45,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:45,128 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,130 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 10 transitions. [2020-04-18 10:49:45,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,134 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:45,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:49:45,134 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-04-18 10:49:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,137 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2020-04-18 10:49:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2020-04-18 10:49:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:49:45,138 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:49:45,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,139 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 3 times [2020-04-18 10:49:45,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844684413] [2020-04-18 10:49:45,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,190 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 10:49:45,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844684413] [2020-04-18 10:49:45,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:45,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,193 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 21 transitions. [2020-04-18 10:49:45,193 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,204 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:45,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:49:45,205 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand 4 states. [2020-04-18 10:49:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,221 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2020-04-18 10:49:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2020-04-18 10:49:45,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:49:45,222 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [111663048] [2020-04-18 10:49:45,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:49:45,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:49:45,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [111663048] [2020-04-18 10:49:45,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:49:45,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:49:45,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:49:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:49:45,228 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 5 states. [2020-04-18 10:49:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,259 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 10:49:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:49:45,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-04-18 10:49:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:49:45,260 INFO L225 Difference]: With dead ends: 60 [2020-04-18 10:49:45,260 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 10:49:45,261 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:49:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 10:49:45,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 10:49:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 10:49:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 10:49:45,266 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-04-18 10:49:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:49:45,266 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 10:49:45,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:49:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 10:49:45,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:49:45,267 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:49:45,267 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:49:45,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:49:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-04-18 10:49:45,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:49:45,268 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2120587363] [2020-04-18 10:49:45,269 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 45 transitions. [2020-04-18 10:49:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 10:49:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:49:45,270 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:49:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1822459802, now seen corresponding path program 2 times [2020-04-18 10:49:45,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456634763] [2020-04-18 10:49:45,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,303 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 10:49:45,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456634763] [2020-04-18 10:49:45,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:45,308 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,308 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,311 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:49:45,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,317 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:45,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:49:45,318 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-04-18 10:49:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,322 INFO L93 Difference]: Finished difference Result 30 states and 49 transitions. [2020-04-18 10:49:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-04-18 10:49:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:49:45,323 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:49:45,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1822423532, now seen corresponding path program 3 times [2020-04-18 10:49:45,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867868317] [2020-04-18 10:49:45,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,381 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 10:49:45,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867868317] [2020-04-18 10:49:45,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:49:45,383 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,383 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,385 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 26 transitions. [2020-04-18 10:49:45,385 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,399 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:45,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:49:45,400 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 4 states. [2020-04-18 10:49:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,415 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-04-18 10:49:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 10:49:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:49:45,416 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:49:45,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 4 times [2020-04-18 10:49:45,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583599999] [2020-04-18 10:49:45,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,507 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 10:49:45,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583599999] [2020-04-18 10:49:45,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:45,510 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,511 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,518 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-04-18 10:49:45,518 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,539 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:45,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:49:45,540 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-04-18 10:49:45,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,552 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-04-18 10:49:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 10:49:45,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:49:45,553 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2120587363] [2020-04-18 10:49:45,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:49:45,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:49:45,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2120587363] [2020-04-18 10:49:45,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:49:45,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:49:45,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:49:45,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:49:45,562 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 7 states. [2020-04-18 10:49:45,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,740 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 10:49:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 10:49:45,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-04-18 10:49:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:49:45,743 INFO L225 Difference]: With dead ends: 39 [2020-04-18 10:49:45,743 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 10:49:45,744 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:49:45,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 10:49:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 10:49:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 10:49:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-18 10:49:45,754 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-18 10:49:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:49:45,754 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-18 10:49:45,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:49:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-18 10:49:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:49:45,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:49:45,755 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:49:45,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:49:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-04-18 10:49:45,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:49:45,757 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1781916973] [2020-04-18 10:49:45,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,758 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 62 transitions. [2020-04-18 10:49:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 10:49:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:49:45,761 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:49:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,762 INFO L82 PathProgramCache]: Analyzing trace with hash 661679175, now seen corresponding path program 2 times [2020-04-18 10:49:45,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319616583] [2020-04-18 10:49:45,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,803 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 10:49:45,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319616583] [2020-04-18 10:49:45,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:45,804 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,806 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 10:49:45,807 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,810 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:45,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:49:45,811 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-04-18 10:49:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,816 INFO L93 Difference]: Finished difference Result 40 states and 69 transitions. [2020-04-18 10:49:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2020-04-18 10:49:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:49:45,817 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:49:45,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash 660554805, now seen corresponding path program 3 times [2020-04-18 10:49:45,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765722614] [2020-04-18 10:49:45,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,857 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 10:49:45,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765722614] [2020-04-18 10:49:45,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:49:45,879 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,883 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 29 transitions. [2020-04-18 10:49:45,883 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:45,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:45,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:45,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:49:45,902 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 4 states. [2020-04-18 10:49:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:45,920 INFO L93 Difference]: Finished difference Result 46 states and 76 transitions. [2020-04-18 10:49:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-04-18 10:49:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:49:45,921 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:49:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1207651935, now seen corresponding path program 4 times [2020-04-18 10:49:45,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:45,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082993447] [2020-04-18 10:49:45,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:49:45,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082993447] [2020-04-18 10:49:45,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:45,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:45,991 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:45,991 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:45,993 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 10:49:45,993 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:46,014 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:49:46,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:46,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:49:46,015 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 4 states. [2020-04-18 10:49:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,033 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2020-04-18 10:49:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 81 transitions. [2020-04-18 10:49:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:49:46,034 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:49:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:46,035 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 5 times [2020-04-18 10:49:46,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:46,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887249676] [2020-04-18 10:49:46,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:46,092 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 10:49:46,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887249676] [2020-04-18 10:49:46,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:46,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:49:46,093 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:46,094 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:46,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 10:49:46,096 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:46,145 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:49:46,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:49:46,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:49:46,146 INFO L87 Difference]: Start difference. First operand 52 states and 81 transitions. Second operand 6 states. [2020-04-18 10:49:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,168 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2020-04-18 10:49:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 81 transitions. [2020-04-18 10:49:46,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:49:46,169 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1781916973] [2020-04-18 10:49:46,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:49:46,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:49:46,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1781916973] [2020-04-18 10:49:46,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:49:46,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:49:46,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:49:46,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:49:46,171 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 9 states. [2020-04-18 10:49:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,303 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-18 10:49:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 10:49:46,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-04-18 10:49:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:49:46,305 INFO L225 Difference]: With dead ends: 27 [2020-04-18 10:49:46,305 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 10:49:46,305 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:49:46,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 10:49:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 10:49:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 10:49:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 10:49:46,308 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-18 10:49:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:49:46,309 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 10:49:46,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:49:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 10:49:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:49:46,309 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:49:46,309 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:49:46,310 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:49:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:46,310 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-04-18 10:49:46,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:49:46,311 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1802265740] [2020-04-18 10:49:46,311 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:46,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 10:49:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 10:49:46,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:49:46,314 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:49:46,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:46,314 INFO L82 PathProgramCache]: Analyzing trace with hash 218531441, now seen corresponding path program 2 times [2020-04-18 10:49:46,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:46,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511956922] [2020-04-18 10:49:46,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:46,340 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 10:49:46,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511956922] [2020-04-18 10:49:46,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:46,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:46,341 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:46,342 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:46,343 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 10:49:46,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:46,347 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:46,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:49:46,348 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2020-04-18 10:49:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,355 INFO L93 Difference]: Finished difference Result 72 states and 140 transitions. [2020-04-18 10:49:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 140 transitions. [2020-04-18 10:49:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:49:46,356 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:49:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:46,356 INFO L82 PathProgramCache]: Analyzing trace with hash -861988129, now seen corresponding path program 3 times [2020-04-18 10:49:46,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:46,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791120343] [2020-04-18 10:49:46,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:46,382 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 10:49:46,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791120343] [2020-04-18 10:49:46,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:46,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:49:46,384 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:46,384 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:46,387 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 10:49:46,387 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:46,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:49:46,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:46,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:49:46,398 INFO L87 Difference]: Start difference. First operand 72 states and 140 transitions. Second operand 4 states. [2020-04-18 10:49:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,411 INFO L93 Difference]: Finished difference Result 90 states and 173 transitions. [2020-04-18 10:49:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 173 transitions. [2020-04-18 10:49:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:49:46,411 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:49:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:46,412 INFO L82 PathProgramCache]: Analyzing trace with hash 912343689, now seen corresponding path program 4 times [2020-04-18 10:49:46,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:46,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243443592] [2020-04-18 10:49:46,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:46,448 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 10:49:46,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243443592] [2020-04-18 10:49:46,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:46,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:49:46,449 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:46,450 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:46,452 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-04-18 10:49:46,452 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:46,471 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:49:46,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:49:46,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:49:46,472 INFO L87 Difference]: Start difference. First operand 90 states and 173 transitions. Second operand 4 states. [2020-04-18 10:49:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,497 INFO L93 Difference]: Finished difference Result 112 states and 202 transitions. [2020-04-18 10:49:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 202 transitions. [2020-04-18 10:49:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:49:46,498 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:49:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash -829444795, now seen corresponding path program 5 times [2020-04-18 10:49:46,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:46,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21743719] [2020-04-18 10:49:46,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:46,554 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 10:49:46,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21743719] [2020-04-18 10:49:46,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:46,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:49:46,555 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:46,557 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:46,559 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 10:49:46,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:46,608 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:49:46,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:49:46,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:49:46,609 INFO L87 Difference]: Start difference. First operand 112 states and 202 transitions. Second operand 6 states. [2020-04-18 10:49:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,663 INFO L93 Difference]: Finished difference Result 116 states and 204 transitions. [2020-04-18 10:49:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 204 transitions. [2020-04-18 10:49:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:49:46,664 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:49:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:49:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 6 times [2020-04-18 10:49:46,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:49:46,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383261504] [2020-04-18 10:49:46,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:49:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:49:46,685 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 10:49:46,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383261504] [2020-04-18 10:49:46,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:49:46,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:49:46,686 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:49:46,687 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:49:46,689 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 10:49:46,689 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:49:46,702 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:49:46,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:49:46,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:49:46,703 INFO L87 Difference]: Start difference. First operand 116 states and 204 transitions. Second operand 3 states. [2020-04-18 10:49:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,709 INFO L93 Difference]: Finished difference Result 164 states and 268 transitions. [2020-04-18 10:49:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 268 transitions. [2020-04-18 10:49:46,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:49:46,710 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1802265740] [2020-04-18 10:49:46,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:49:46,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:49:46,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1802265740] [2020-04-18 10:49:46,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 10:49:46,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:49:46,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:49:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:49:46,712 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 10 states. [2020-04-18 10:49:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:49:46,807 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 10:49:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 10:49:46,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-04-18 10:49:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:49:46,808 INFO L225 Difference]: With dead ends: 21 [2020-04-18 10:49:46,808 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:49:46,809 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:49:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:49:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:49:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:49:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:49:46,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 10:49:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:49:46,810 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:49:46,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 10:49:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:49:46,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:49:46,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:49:46 BasicIcfg [2020-04-18 10:49:46,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:49:46,817 INFO L168 Benchmark]: Toolchain (without parser) took 5649.40 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 100.6 MB in the beginning and 91.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:49:46,818 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:49:46,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.43 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 98.8 MB in the beginning and 157.2 MB in the end (delta: -58.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-04-18 10:49:46,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.80 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:49:46,820 INFO L168 Benchmark]: Boogie Preprocessor took 24.84 ms. Allocated memory is still 202.4 MB. Free memory was 155.2 MB in the beginning and 154.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:49:46,821 INFO L168 Benchmark]: RCFGBuilder took 456.96 ms. Allocated memory is still 202.4 MB. Free memory was 154.2 MB in the beginning and 134.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:49:46,822 INFO L168 Benchmark]: TraceAbstraction took 4277.51 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 134.0 MB in the beginning and 91.2 MB in the end (delta: 42.8 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:49:46,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 821.43 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 98.8 MB in the beginning and 157.2 MB in the end (delta: -58.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.80 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.84 ms. Allocated memory is still 202.4 MB. Free memory was 155.2 MB in the beginning and 154.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.96 ms. Allocated memory is still 202.4 MB. Free memory was 154.2 MB in the beginning and 134.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4277.51 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 134.0 MB in the beginning and 91.2 MB in the end (delta: 42.8 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 372 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 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 3 procedures, 54 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: 1.7s, HoareTripleCheckerStatistics: 68 SDtfs, 93 SDslu, 121 SDs, 0 SdLazy, 140 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s 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...