/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:07:43,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:07:43,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:07:43,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:07:43,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:07:43,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:07:43,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:07:43,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:07:43,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:07:43,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:07:43,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:07:43,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:07:43,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:07:43,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:07:43,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:07:43,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:07:43,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:07:43,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:07:43,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:07:43,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:07:43,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:07:43,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:07:43,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:07:43,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:07:43,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:07:43,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:07:43,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:07:43,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:07:43,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:07:43,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:07:43,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:07:43,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:07:43,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:07:43,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:07:43,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:07:43,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:07:43,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:07:43,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:07:43,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:07:43,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:07:43,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:07:43,147 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-NoLbe-McrStrategy.epf [2020-04-18 20:07:43,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:07:43,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:07:43,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:07:43,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:07:43,173 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:07:43,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:07:43,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:07:43,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:07:43,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:07:43,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:07:43,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:07:43,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:07:43,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:07:43,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:07:43,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:07:43,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:07:43,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:07:43,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:07:43,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:07:43,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:07:43,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:07:43,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:07:43,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:07:43,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:07:43,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:07:43,178 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:07:43,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:07:43,178 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:07:43,179 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:07:43,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:07:43,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:07:43,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:07:43,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:07:43,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:07:43,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:07:43,466 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:07:43,467 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 20:07:43,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9996b962/b58d3187fa654e32b22ba87295037c68/FLAGcdb349425 [2020-04-18 20:07:44,094 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:07:44,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 20:07:44,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9996b962/b58d3187fa654e32b22ba87295037c68/FLAGcdb349425 [2020-04-18 20:07:44,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9996b962/b58d3187fa654e32b22ba87295037c68 [2020-04-18 20:07:44,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:07:44,429 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:07:44,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:07:44,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:07:44,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:07:44,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:07:44" (1/1) ... [2020-04-18 20:07:44,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53447278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:44, skipping insertion in model container [2020-04-18 20:07:44,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:07:44" (1/1) ... [2020-04-18 20:07:44,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:07:44,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:07:44,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:07:44,948 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:07:45,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:07:45,118 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:07:45,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45 WrapperNode [2020-04-18 20:07:45,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:07:45,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:07:45,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:07:45,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:07:45,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:07:45,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:07:45,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:07:45,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:07:45,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (1/1) ... [2020-04-18 20:07:45,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:07:45,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:07:45,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:07:45,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:07:45,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (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 20:07:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:07:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:07:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:07:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:07:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:07:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:07:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:07:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:07:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:07:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:07:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 20:07:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 20:07:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:07:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:07:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:07:45,281 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 20:07:45,708 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:07:45,709 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:07:45,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:07:45 BoogieIcfgContainer [2020-04-18 20:07:45,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:07:45,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:07:45,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:07:45,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:07:45,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:07:44" (1/3) ... [2020-04-18 20:07:45,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22480af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:07:45, skipping insertion in model container [2020-04-18 20:07:45,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:07:45" (2/3) ... [2020-04-18 20:07:45,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22480af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:07:45, skipping insertion in model container [2020-04-18 20:07:45,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:07:45" (3/3) ... [2020-04-18 20:07:45,722 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2020-04-18 20:07:45,733 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:07:45,733 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:07:45,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:07:45,742 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:07:45,770 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,771 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,771 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,772 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,772 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,772 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,773 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,773 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,773 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,774 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,774 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,774 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,775 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,775 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,775 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,775 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,776 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,776 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,777 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,777 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,777 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,777 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,778 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,780 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,784 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,785 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,791 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,791 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,791 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,792 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,796 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,796 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,796 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,797 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,799 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,800 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,800 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,800 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:07:45,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 20:07:45,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:07:45,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:07:45,837 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:07:45,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:07:45,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:07:45,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:07:45,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:07:45,837 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:07:45,851 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 20:07:55,121 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 64041 states. [2020-04-18 20:07:55,124 INFO L276 IsEmpty]: Start isEmpty. Operand 64041 states. [2020-04-18 20:07:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 20:07:55,207 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:07:55,209 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:07:55,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:07:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:07:55,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 1 times [2020-04-18 20:07:55,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:07:55,225 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1443238848] [2020-04-18 20:07:55,241 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:07:55,259 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 43 transitions. [2020-04-18 20:07:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 20:07:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 20:07:55,263 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:07:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:07:55,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 2 times [2020-04-18 20:07:55,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:07:55,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392209779] [2020-04-18 20:07:55,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:07:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:07:55,813 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 20:07:55,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392209779] [2020-04-18 20:07:55,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:07:55,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:07:55,817 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:07:55,821 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:07:55,829 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 43 transitions. [2020-04-18 20:07:55,829 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:07:55,890 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:07:55,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:07:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:07:55,898 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 7 states. [2020-04-18 20:07:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:07:55,981 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-04-18 20:07:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2020-04-18 20:07:55,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:07:55,983 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1443238848] [2020-04-18 20:07:55,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:07:55,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:07:55,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1443238848] [2020-04-18 20:07:55,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:07:55,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:07:55,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:07:55,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:07:55,992 INFO L87 Difference]: Start difference. First operand 64041 states. Second operand 7 states. [2020-04-18 20:07:56,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:07:56,949 INFO L93 Difference]: Finished difference Result 90109 states and 391525 transitions. [2020-04-18 20:07:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:07:56,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-04-18 20:07:56,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:07:59,266 INFO L225 Difference]: With dead ends: 90109 [2020-04-18 20:07:59,266 INFO L226 Difference]: Without dead ends: 28712 [2020-04-18 20:07:59,268 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 20:07:59,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28712 states. [2020-04-18 20:08:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28712 to 28712. [2020-04-18 20:08:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28712 states. [2020-04-18 20:08:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28712 states to 28712 states and 122515 transitions. [2020-04-18 20:08:00,748 INFO L78 Accepts]: Start accepts. Automaton has 28712 states and 122515 transitions. Word has length 43 [2020-04-18 20:08:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:08:00,751 INFO L479 AbstractCegarLoop]: Abstraction has 28712 states and 122515 transitions. [2020-04-18 20:08:00,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:08:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 28712 states and 122515 transitions. [2020-04-18 20:08:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:08:00,800 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:08:00,801 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:08:00,802 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:08:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:00,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1523533381, now seen corresponding path program 1 times [2020-04-18 20:08:00,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:08:00,803 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [348321923] [2020-04-18 20:08:00,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:00,813 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 125 transitions. [2020-04-18 20:08:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-04-18 20:08:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:08:00,816 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:08:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:00,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1523533381, now seen corresponding path program 2 times [2020-04-18 20:08:00,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:00,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254753119] [2020-04-18 20:08:00,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:01,421 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 20:08:01,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254753119] [2020-04-18 20:08:01,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:01,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:08:01,422 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:01,427 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:01,435 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 101 transitions. [2020-04-18 20:08:01,435 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:01,490 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:08:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:08:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:08:01,491 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 7 states. [2020-04-18 20:08:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:01,556 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2020-04-18 20:08:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 125 transitions. [2020-04-18 20:08:01,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:08:01,557 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [348321923] [2020-04-18 20:08:01,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:08:01,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:08:01,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [348321923] [2020-04-18 20:08:01,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:08:01,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:08:01,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:08:01,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:08:01,560 INFO L87 Difference]: Start difference. First operand 28712 states and 122515 transitions. Second operand 7 states. [2020-04-18 20:08:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:02,023 INFO L93 Difference]: Finished difference Result 32632 states and 138006 transitions. [2020-04-18 20:08:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:08:02,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-04-18 20:08:02,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:08:02,222 INFO L225 Difference]: With dead ends: 32632 [2020-04-18 20:08:02,222 INFO L226 Difference]: Without dead ends: 25772 [2020-04-18 20:08:02,233 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 20:08:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25772 states. [2020-04-18 20:08:04,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25772 to 25772. [2020-04-18 20:08:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25772 states. [2020-04-18 20:08:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25772 states to 25772 states and 109243 transitions. [2020-04-18 20:08:05,063 INFO L78 Accepts]: Start accepts. Automaton has 25772 states and 109243 transitions. Word has length 45 [2020-04-18 20:08:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:08:05,064 INFO L479 AbstractCegarLoop]: Abstraction has 25772 states and 109243 transitions. [2020-04-18 20:08:05,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:08:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25772 states and 109243 transitions. [2020-04-18 20:08:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 20:08:05,107 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:08:05,107 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:08:05,107 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:08:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:05,108 INFO L82 PathProgramCache]: Analyzing trace with hash -151681786, now seen corresponding path program 1 times [2020-04-18 20:08:05,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:08:05,109 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [28257806] [2020-04-18 20:08:05,110 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:05,119 INFO L259 McrAutomatonBuilder]: Finished intersection with 188 states and 391 transitions. [2020-04-18 20:08:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2020-04-18 20:08:05,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 20:08:05,121 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:08:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:05,122 INFO L82 PathProgramCache]: Analyzing trace with hash -151681786, now seen corresponding path program 2 times [2020-04-18 20:08:05,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:05,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522884296] [2020-04-18 20:08:05,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:05,303 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 20:08:05,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522884296] [2020-04-18 20:08:05,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:05,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:08:05,304 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:05,309 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:05,327 INFO L259 McrAutomatonBuilder]: Finished intersection with 140 states and 271 transitions. [2020-04-18 20:08:05,327 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:05,525 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:08:05,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:08:05,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:08:05,526 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 10 states. [2020-04-18 20:08:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:05,603 INFO L93 Difference]: Finished difference Result 188 states and 391 transitions. [2020-04-18 20:08:05,603 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 391 transitions. [2020-04-18 20:08:05,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:08:05,605 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [28257806] [2020-04-18 20:08:05,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:08:05,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:08:05,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [28257806] [2020-04-18 20:08:05,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 20:08:05,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:08:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:08:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-04-18 20:08:05,609 INFO L87 Difference]: Start difference. First operand 25772 states and 109243 transitions. Second operand 10 states. [2020-04-18 20:08:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:05,990 INFO L93 Difference]: Finished difference Result 28572 states and 120148 transitions. [2020-04-18 20:08:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:08:05,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-04-18 20:08:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:08:06,103 INFO L225 Difference]: With dead ends: 28572 [2020-04-18 20:08:06,104 INFO L226 Difference]: Without dead ends: 23672 [2020-04-18 20:08:06,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:08:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23672 states. [2020-04-18 20:08:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23672 to 23672. [2020-04-18 20:08:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23672 states. [2020-04-18 20:08:07,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23672 states to 23672 states and 99883 transitions. [2020-04-18 20:08:07,244 INFO L78 Accepts]: Start accepts. Automaton has 23672 states and 99883 transitions. Word has length 47 [2020-04-18 20:08:07,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:08:07,244 INFO L479 AbstractCegarLoop]: Abstraction has 23672 states and 99883 transitions. [2020-04-18 20:08:07,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 20:08:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 23672 states and 99883 transitions. [2020-04-18 20:08:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:08:07,284 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:08:07,285 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:08:07,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:08:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:07,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1583639609, now seen corresponding path program 1 times [2020-04-18 20:08:07,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:08:07,286 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1331651395] [2020-04-18 20:08:07,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:07,298 INFO L259 McrAutomatonBuilder]: Finished intersection with 526 states and 1473 transitions. [2020-04-18 20:08:07,302 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states. [2020-04-18 20:08:07,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:08:07,304 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:08:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:07,304 INFO L82 PathProgramCache]: Analyzing trace with hash 881164711, now seen corresponding path program 2 times [2020-04-18 20:08:07,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:07,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503933383] [2020-04-18 20:08:07,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:07,453 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 20:08:07,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503933383] [2020-04-18 20:08:07,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:07,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:08:07,454 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:07,460 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:07,510 INFO L259 McrAutomatonBuilder]: Finished intersection with 370 states and 993 transitions. [2020-04-18 20:08:07,510 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:07,834 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 20:08:07,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:08:07,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:08:07,835 INFO L87 Difference]: Start difference. First operand 526 states. Second operand 15 states. [2020-04-18 20:08:08,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:08,045 INFO L93 Difference]: Finished difference Result 526 states and 1473 transitions. [2020-04-18 20:08:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1473 transitions. [2020-04-18 20:08:08,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:08:08,047 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1331651395] [2020-04-18 20:08:08,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:08:08,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:08:08,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1331651395] [2020-04-18 20:08:08,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:08:08,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:08:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:08:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-04-18 20:08:08,049 INFO L87 Difference]: Start difference. First operand 23672 states and 99883 transitions. Second operand 15 states. [2020-04-18 20:08:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:08,535 INFO L93 Difference]: Finished difference Result 33622 states and 140488 transitions. [2020-04-18 20:08:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 20:08:08,536 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-04-18 20:08:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:08:08,584 INFO L225 Difference]: With dead ends: 33622 [2020-04-18 20:08:08,584 INFO L226 Difference]: Without dead ends: 16997 [2020-04-18 20:08:08,585 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2020-04-18 20:08:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16997 states. [2020-04-18 20:08:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16997 to 16997. [2020-04-18 20:08:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16997 states. [2020-04-18 20:08:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16997 states to 16997 states and 69883 transitions. [2020-04-18 20:08:09,556 INFO L78 Accepts]: Start accepts. Automaton has 16997 states and 69883 transitions. Word has length 49 [2020-04-18 20:08:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:08:09,556 INFO L479 AbstractCegarLoop]: Abstraction has 16997 states and 69883 transitions. [2020-04-18 20:08:09,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:08:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16997 states and 69883 transitions. [2020-04-18 20:08:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 20:08:09,600 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:08:09,600 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:08:09,601 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:08:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash -138688327, now seen corresponding path program 1 times [2020-04-18 20:08:09,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:08:09,602 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1205611484] [2020-04-18 20:08:09,604 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:09,629 INFO L259 McrAutomatonBuilder]: Finished intersection with 695 states and 2014 transitions. [2020-04-18 20:08:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states. [2020-04-18 20:08:09,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 20:08:09,638 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:08:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:09,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1968851303, now seen corresponding path program 2 times [2020-04-18 20:08:09,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:09,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469071616] [2020-04-18 20:08:09,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:09,778 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 20:08:09,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469071616] [2020-04-18 20:08:09,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:09,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:08:09,779 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:09,785 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:09,849 INFO L259 McrAutomatonBuilder]: Finished intersection with 374 states and 964 transitions. [2020-04-18 20:08:09,850 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:10,071 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 20:08:10,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:08:10,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:08:10,072 INFO L87 Difference]: Start difference. First operand 695 states. Second operand 15 states. [2020-04-18 20:08:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:10,198 INFO L93 Difference]: Finished difference Result 695 states and 2014 transitions. [2020-04-18 20:08:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 2014 transitions. [2020-04-18 20:08:10,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:08:10,200 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1205611484] [2020-04-18 20:08:10,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:08:10,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:08:10,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1205611484] [2020-04-18 20:08:10,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:08:10,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:08:10,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:08:10,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-04-18 20:08:10,201 INFO L87 Difference]: Start difference. First operand 16997 states and 69883 transitions. Second operand 15 states. [2020-04-18 20:08:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:10,477 INFO L93 Difference]: Finished difference Result 23877 states and 97731 transitions. [2020-04-18 20:08:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 20:08:10,478 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-04-18 20:08:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:08:10,504 INFO L225 Difference]: With dead ends: 23877 [2020-04-18 20:08:10,504 INFO L226 Difference]: Without dead ends: 9807 [2020-04-18 20:08:10,505 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-04-18 20:08:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9807 states. [2020-04-18 20:08:10,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9807 to 9807. [2020-04-18 20:08:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9807 states. [2020-04-18 20:08:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 39413 transitions. [2020-04-18 20:08:10,779 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 39413 transitions. Word has length 50 [2020-04-18 20:08:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:08:10,780 INFO L479 AbstractCegarLoop]: Abstraction has 9807 states and 39413 transitions. [2020-04-18 20:08:10,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:08:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 39413 transitions. [2020-04-18 20:08:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 20:08:10,800 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:08:10,800 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:08:10,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:08:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash -351020804, now seen corresponding path program 1 times [2020-04-18 20:08:10,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:08:10,802 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [89678132] [2020-04-18 20:08:10,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:11,076 INFO L259 McrAutomatonBuilder]: Finished intersection with 2099 states and 7639 transitions. [2020-04-18 20:08:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states. [2020-04-18 20:08:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 20:08:11,103 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:08:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:11,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1148201348, now seen corresponding path program 2 times [2020-04-18 20:08:11,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:11,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588201870] [2020-04-18 20:08:11,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:11,282 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 20:08:11,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588201870] [2020-04-18 20:08:11,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:11,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:08:11,284 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:11,293 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:11,551 INFO L259 McrAutomatonBuilder]: Finished intersection with 863 states and 2762 transitions. [2020-04-18 20:08:11,552 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:12,140 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 43 times. [2020-04-18 20:08:12,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 20:08:12,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:08:12,141 INFO L87 Difference]: Start difference. First operand 2099 states. Second operand 19 states. [2020-04-18 20:08:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:12,693 INFO L93 Difference]: Finished difference Result 2405 states and 8488 transitions. [2020-04-18 20:08:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 8488 transitions. [2020-04-18 20:08:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 20:08:12,697 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:08:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:12,698 INFO L82 PathProgramCache]: Analyzing trace with hash 632225758, now seen corresponding path program 3 times [2020-04-18 20:08:12,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:12,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947682896] [2020-04-18 20:08:12,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:08:12,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947682896] [2020-04-18 20:08:12,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:12,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:08:12,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:12,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:12,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 723 states and 2293 transitions. [2020-04-18 20:08:12,938 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:13,191 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 20:08:13,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:08:13,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 20:08:13,191 INFO L87 Difference]: Start difference. First operand 2405 states and 8488 transitions. Second operand 16 states. [2020-04-18 20:08:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:14,217 INFO L93 Difference]: Finished difference Result 2907 states and 9552 transitions. [2020-04-18 20:08:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 9552 transitions. [2020-04-18 20:08:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 20:08:14,222 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:08:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash 728629392, now seen corresponding path program 4 times [2020-04-18 20:08:14,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:14,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757975646] [2020-04-18 20:08:14,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:14,358 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 20:08:14,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757975646] [2020-04-18 20:08:14,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:14,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:08:14,359 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:14,364 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:15,449 INFO L259 McrAutomatonBuilder]: Finished intersection with 387 states and 1061 transitions. [2020-04-18 20:08:15,449 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:15,481 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:08:15,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:08:15,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=2230, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 20:08:15,482 INFO L87 Difference]: Start difference. First operand 2907 states and 9552 transitions. Second operand 7 states. [2020-04-18 20:08:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:15,590 INFO L93 Difference]: Finished difference Result 3339 states and 10712 transitions. [2020-04-18 20:08:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 10712 transitions. [2020-04-18 20:08:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 20:08:15,595 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:08:15,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:15,595 INFO L82 PathProgramCache]: Analyzing trace with hash 660690162, now seen corresponding path program 5 times [2020-04-18 20:08:15,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:15,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932204210] [2020-04-18 20:08:15,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:15,699 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 20:08:15,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932204210] [2020-04-18 20:08:15,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:15,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:08:15,700 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:15,705 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:15,802 INFO L259 McrAutomatonBuilder]: Finished intersection with 538 states and 1604 transitions. [2020-04-18 20:08:15,802 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:15,907 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 20:08:15,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:08:15,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2655, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 20:08:15,909 INFO L87 Difference]: Start difference. First operand 3339 states and 10712 transitions. Second operand 10 states. [2020-04-18 20:08:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:16,078 INFO L93 Difference]: Finished difference Result 3339 states and 10712 transitions. [2020-04-18 20:08:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 10712 transitions. [2020-04-18 20:08:16,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:08:16,085 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [89678132] [2020-04-18 20:08:16,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:08:16,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:08:16,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [89678132] [2020-04-18 20:08:16,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-04-18 20:08:16,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:08:16,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-04-18 20:08:16,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=872, Invalid=3160, Unknown=0, NotChecked=0, Total=4032 [2020-04-18 20:08:16,088 INFO L87 Difference]: Start difference. First operand 9807 states and 39413 transitions. Second operand 31 states. [2020-04-18 20:08:16,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:16,340 INFO L93 Difference]: Finished difference Result 13167 states and 52661 transitions. [2020-04-18 20:08:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 20:08:16,341 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 53 [2020-04-18 20:08:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:08:16,355 INFO L225 Difference]: With dead ends: 13167 [2020-04-18 20:08:16,355 INFO L226 Difference]: Without dead ends: 6307 [2020-04-18 20:08:16,357 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1041, Invalid=3651, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 20:08:16,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2020-04-18 20:08:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 6307. [2020-04-18 20:08:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6307 states. [2020-04-18 20:08:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 24719 transitions. [2020-04-18 20:08:16,485 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 24719 transitions. Word has length 53 [2020-04-18 20:08:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:08:16,485 INFO L479 AbstractCegarLoop]: Abstraction has 6307 states and 24719 transitions. [2020-04-18 20:08:16,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-04-18 20:08:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 24719 transitions. [2020-04-18 20:08:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:08:16,493 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:08:16,493 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:08:16,493 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:08:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash -306071538, now seen corresponding path program 1 times [2020-04-18 20:08:16,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:08:16,494 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1968000786] [2020-04-18 20:08:16,495 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:16,540 INFO L259 McrAutomatonBuilder]: Finished intersection with 2787 states and 10399 transitions. [2020-04-18 20:08:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states. [2020-04-18 20:08:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:08:16,570 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:08:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash -906923700, now seen corresponding path program 2 times [2020-04-18 20:08:16,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:16,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108723827] [2020-04-18 20:08:16,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:16,678 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 20:08:16,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108723827] [2020-04-18 20:08:16,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:16,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:08:16,679 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:16,685 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:16,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 703 states and 2086 transitions. [2020-04-18 20:08:16,819 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:16,919 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:08:16,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:08:16,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:08:16,919 INFO L87 Difference]: Start difference. First operand 2787 states. Second operand 10 states. [2020-04-18 20:08:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:17,180 INFO L93 Difference]: Finished difference Result 3195 states and 11565 transitions. [2020-04-18 20:08:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 11565 transitions. [2020-04-18 20:08:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 20:08:17,185 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:08:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:08:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash 231236428, now seen corresponding path program 3 times [2020-04-18 20:08:17,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:08:17,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752282404] [2020-04-18 20:08:17,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:08:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:08:17,301 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 20:08:17,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752282404] [2020-04-18 20:08:17,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:08:17,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:08:17,303 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:08:17,308 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:08:17,594 INFO L259 McrAutomatonBuilder]: Finished intersection with 745 states and 2289 transitions. [2020-04-18 20:08:17,594 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:08:17,720 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 20:08:17,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 20:08:17,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2020-04-18 20:08:17,721 INFO L87 Difference]: Start difference. First operand 3195 states and 11565 transitions. Second operand 12 states. [2020-04-18 20:08:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:17,877 INFO L93 Difference]: Finished difference Result 3195 states and 11565 transitions. [2020-04-18 20:08:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 11565 transitions. [2020-04-18 20:08:17,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:08:17,885 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1968000786] [2020-04-18 20:08:17,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:08:17,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:08:17,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1968000786] [2020-04-18 20:08:17,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 20:08:17,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:08:17,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:08:17,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-04-18 20:08:17,887 INFO L87 Difference]: Start difference. First operand 6307 states and 24719 transitions. Second operand 16 states. [2020-04-18 20:08:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:08:18,118 INFO L93 Difference]: Finished difference Result 5667 states and 22127 transitions. [2020-04-18 20:08:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 20:08:18,118 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-04-18 20:08:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:08:18,119 INFO L225 Difference]: With dead ends: 5667 [2020-04-18 20:08:18,119 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:08:18,120 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=343, Invalid=1139, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 20:08:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:08:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:08:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:08:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:08:18,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-04-18 20:08:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:08:18,120 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:08:18,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 20:08:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:08:18,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:08:18,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:08:18 BasicIcfg [2020-04-18 20:08:18,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:08:18,127 INFO L168 Benchmark]: Toolchain (without parser) took 33713.75 ms. Allocated memory was 145.8 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 102.7 MB in the beginning and 1.0 GB in the end (delta: -897.6 MB). Peak memory consumption was 571.5 MB. Max. memory is 7.1 GB. [2020-04-18 20:08:18,128 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 20:08:18,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.90 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 159.5 MB in the end (delta: -58.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:08:18,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.66 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:08:18,129 INFO L168 Benchmark]: Boogie Preprocessor took 37.78 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:08:18,130 INFO L168 Benchmark]: RCFGBuilder took 505.70 ms. Allocated memory is still 203.4 MB. Free memory was 156.1 MB in the beginning and 131.0 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-04-18 20:08:18,131 INFO L168 Benchmark]: TraceAbstraction took 32410.11 ms. Allocated memory was 203.4 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 131.0 MB in the beginning and 1.0 GB in the end (delta: -869.3 MB). Peak memory consumption was 542.1 MB. Max. memory is 7.1 GB. [2020-04-18 20:08:18,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.90 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 159.5 MB in the end (delta: -58.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.66 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.78 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.70 ms. Allocated memory is still 203.4 MB. Free memory was 156.1 MB in the beginning and 131.0 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32410.11 ms. Allocated memory was 203.4 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 131.0 MB in the beginning and 1.0 GB in the end (delta: -869.3 MB). Peak memory consumption was 542.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.2s, HoareTripleCheckerStatistics: 838 SDtfs, 2871 SDslu, 4220 SDs, 0 SdLazy, 474 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 846 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64041occurred 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: 6.8s AutomataMinimizationTime, 7 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...