/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/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:23:51,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:23:51,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:23:51,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:23:51,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:23:51,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:23:51,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:23:51,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:23:51,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:23:51,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:23:51,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:23:51,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:23:51,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:23:51,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:23:51,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:23:51,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:23:51,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:23:51,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:23:51,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:23:51,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:23:51,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:23:51,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:23:51,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:23:51,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:23:51,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:23:51,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:23:51,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:23:51,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:23:51,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:23:51,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:23:51,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:23:51,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:23:51,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:23:51,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:23:51,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:23:51,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:23:51,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:23:51,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:23:51,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:23:51,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:23:51,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:23:51,274 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 19:23:51,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:23:51,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:23:51,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:23:51,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:23:51,302 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:23:51,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:23:51,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:23:51,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:23:51,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:23:51,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:23:51,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:23:51,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:23:51,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:23:51,303 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:23:51,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:23:51,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:23:51,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:23:51,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:23:51,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:23:51,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:23:51,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:23:51,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:23:51,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:23:51,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:23:51,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:23:51,306 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:23:51,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:23:51,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:23:51,306 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:23:51,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:23:51,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:23:51,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:23:51,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:23:51,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:23:51,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:23:51,625 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:23:51,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-04-18 19:23:51,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752c72ed0/c23f20c2a6144290a6ef2508afd2d2d4/FLAG3f7ec18a6 [2020-04-18 19:23:52,171 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:23:52,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-04-18 19:23:52,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752c72ed0/c23f20c2a6144290a6ef2508afd2d2d4/FLAG3f7ec18a6 [2020-04-18 19:23:52,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752c72ed0/c23f20c2a6144290a6ef2508afd2d2d4 [2020-04-18 19:23:52,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:23:52,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:23:52,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:23:52,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:23:52,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:23:52,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:23:52" (1/1) ... [2020-04-18 19:23:52,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bfdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:52, skipping insertion in model container [2020-04-18 19:23:52,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:23:52" (1/1) ... [2020-04-18 19:23:52,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:23:52,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:23:53,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:23:53,119 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:23:53,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:23:53,250 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:23:53,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53 WrapperNode [2020-04-18 19:23:53,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:23:53,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:23:53,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:23:53,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:23:53,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:23:53,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:23:53,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:23:53,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:23:53,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... [2020-04-18 19:23:53,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:23:53,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:23:53,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:23:53,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:23:53,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:23:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:23:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:23:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:23:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:23:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:23:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:23:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:23:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:23:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:23:53,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:23:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:23:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:23:53,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:23:53,429 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 19:23:53,821 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:23:53,821 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:23:53,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:23:53 BoogieIcfgContainer [2020-04-18 19:23:53,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:23:53,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:23:53,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:23:53,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:23:53,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:23:52" (1/3) ... [2020-04-18 19:23:53,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2a2eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:23:53, skipping insertion in model container [2020-04-18 19:23:53,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:53" (2/3) ... [2020-04-18 19:23:53,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2a2eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:23:53, skipping insertion in model container [2020-04-18 19:23:53,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:23:53" (3/3) ... [2020-04-18 19:23:53,847 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2020-04-18 19:23:53,861 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:23:53,861 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:23:53,869 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:23:53,870 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:23:53,896 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,896 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,897 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,897 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,898 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,898 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,899 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,899 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,899 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,899 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,900 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,900 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,900 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,901 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,901 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,901 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,902 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,902 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,906 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,907 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,907 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,907 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,914 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,915 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,915 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,915 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,917 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,918 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:53,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:23:53,951 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:23:53,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:23:53,952 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:23:53,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:23:53,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:23:53,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:23:53,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:23:53,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:23:53,966 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 19:23:54,375 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7295 states. [2020-04-18 19:23:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states. [2020-04-18 19:23:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:23:54,421 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:54,422 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] [2020-04-18 19:23:54,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:54,432 INFO L82 PathProgramCache]: Analyzing trace with hash 224354021, now seen corresponding path program 1 times [2020-04-18 19:23:54,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:54,442 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [897042934] [2020-04-18 19:23:54,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:54,486 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:23:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:23:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:23:54,491 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:54,492 INFO L82 PathProgramCache]: Analyzing trace with hash 224354021, now seen corresponding path program 2 times [2020-04-18 19:23:54,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:54,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867979634] [2020-04-18 19:23:54,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:55,021 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 19:23:55,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867979634] [2020-04-18 19:23:55,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:55,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:55,024 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:55,028 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:55,034 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:23:55,034 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:55,093 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:23:55,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:23:55,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:23:55,099 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2020-04-18 19:23:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:55,185 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:23:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:23:55,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:55,189 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [897042934] [2020-04-18 19:23:55,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:55,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:55,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [897042934] [2020-04-18 19:23:55,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:23:55,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:55,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:23:55,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:23:55,199 INFO L87 Difference]: Start difference. First operand 7295 states. Second operand 7 states. [2020-04-18 19:23:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:55,786 INFO L93 Difference]: Finished difference Result 15923 states and 54353 transitions. [2020-04-18 19:23:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:23:55,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-04-18 19:23:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:55,876 INFO L225 Difference]: With dead ends: 15923 [2020-04-18 19:23:55,876 INFO L226 Difference]: Without dead ends: 5053 [2020-04-18 19:23:55,882 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:23:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5053 states. [2020-04-18 19:23:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5053 to 4141. [2020-04-18 19:23:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4141 states. [2020-04-18 19:23:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 13758 transitions. [2020-04-18 19:23:56,191 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 13758 transitions. Word has length 35 [2020-04-18 19:23:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:56,192 INFO L479 AbstractCegarLoop]: Abstraction has 4141 states and 13758 transitions. [2020-04-18 19:23:56,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:23:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 13758 transitions. [2020-04-18 19:23:56,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:23:56,201 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:56,201 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] [2020-04-18 19:23:56,202 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:56,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:56,202 INFO L82 PathProgramCache]: Analyzing trace with hash -657669308, now seen corresponding path program 1 times [2020-04-18 19:23:56,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:56,203 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1902176568] [2020-04-18 19:23:56,204 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:56,207 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 101 transitions. [2020-04-18 19:23:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 19:23:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:23:56,209 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:56,209 INFO L82 PathProgramCache]: Analyzing trace with hash -657669308, now seen corresponding path program 2 times [2020-04-18 19:23:56,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:56,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277090733] [2020-04-18 19:23:56,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:56,416 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 19:23:56,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277090733] [2020-04-18 19:23:56,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:56,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:56,418 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:56,422 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:56,496 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 77 transitions. [2020-04-18 19:23:56,497 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:56,557 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:23:56,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:23:56,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:23:56,559 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 7 states. [2020-04-18 19:23:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:56,629 INFO L93 Difference]: Finished difference Result 70 states and 101 transitions. [2020-04-18 19:23:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 101 transitions. [2020-04-18 19:23:56,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:56,631 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1902176568] [2020-04-18 19:23:56,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:56,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:56,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1902176568] [2020-04-18 19:23:56,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:23:56,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:56,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:23:56,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:23:56,638 INFO L87 Difference]: Start difference. First operand 4141 states and 13758 transitions. Second operand 7 states. [2020-04-18 19:23:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:56,986 INFO L93 Difference]: Finished difference Result 6081 states and 19890 transitions. [2020-04-18 19:23:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:23:56,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:23:56,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:57,021 INFO L225 Difference]: With dead ends: 6081 [2020-04-18 19:23:57,022 INFO L226 Difference]: Without dead ends: 4633 [2020-04-18 19:23:57,027 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:23:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2020-04-18 19:23:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 3961. [2020-04-18 19:23:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3961 states. [2020-04-18 19:23:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 13090 transitions. [2020-04-18 19:23:57,182 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 13090 transitions. Word has length 37 [2020-04-18 19:23:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:57,184 INFO L479 AbstractCegarLoop]: Abstraction has 3961 states and 13090 transitions. [2020-04-18 19:23:57,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:23:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 13090 transitions. [2020-04-18 19:23:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:23:57,197 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:57,197 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] [2020-04-18 19:23:57,197 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:57,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:57,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1578276229, now seen corresponding path program 1 times [2020-04-18 19:23:57,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:57,199 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [379956033] [2020-04-18 19:23:57,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:57,203 INFO L259 McrAutomatonBuilder]: Finished intersection with 148 states and 303 transitions. [2020-04-18 19:23:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-04-18 19:23:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:23:57,207 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:57,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1578276229, now seen corresponding path program 2 times [2020-04-18 19:23:57,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:57,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338187847] [2020-04-18 19:23:57,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:57,442 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 19:23:57,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338187847] [2020-04-18 19:23:57,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:57,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:57,443 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:57,449 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:57,459 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 183 transitions. [2020-04-18 19:23:57,460 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:57,556 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:23:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:57,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:57,562 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 8 states. [2020-04-18 19:23:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:57,639 INFO L93 Difference]: Finished difference Result 148 states and 303 transitions. [2020-04-18 19:23:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-04-18 19:23:57,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:57,641 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [379956033] [2020-04-18 19:23:57,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:57,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:57,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [379956033] [2020-04-18 19:23:57,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:23:57,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:57,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:57,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:23:57,644 INFO L87 Difference]: Start difference. First operand 3961 states and 13090 transitions. Second operand 8 states. [2020-04-18 19:23:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:58,102 INFO L93 Difference]: Finished difference Result 6009 states and 19390 transitions. [2020-04-18 19:23:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:23:58,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-04-18 19:23:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:58,158 INFO L225 Difference]: With dead ends: 6009 [2020-04-18 19:23:58,159 INFO L226 Difference]: Without dead ends: 4873 [2020-04-18 19:23:58,159 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:23:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2020-04-18 19:23:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 3497. [2020-04-18 19:23:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3497 states. [2020-04-18 19:23:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 11486 transitions. [2020-04-18 19:23:58,297 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 11486 transitions. Word has length 39 [2020-04-18 19:23:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:58,297 INFO L479 AbstractCegarLoop]: Abstraction has 3497 states and 11486 transitions. [2020-04-18 19:23:58,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:23:58,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 11486 transitions. [2020-04-18 19:23:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:23:58,307 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:58,307 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] [2020-04-18 19:23:58,308 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash 353597745, now seen corresponding path program 1 times [2020-04-18 19:23:58,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:58,309 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1470257924] [2020-04-18 19:23:58,310 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:58,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 231 states and 516 transitions. [2020-04-18 19:23:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states. [2020-04-18 19:23:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:23:58,318 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:58,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1470806219, now seen corresponding path program 2 times [2020-04-18 19:23:58,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:58,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060950347] [2020-04-18 19:23:58,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:58,479 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 19:23:58,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060950347] [2020-04-18 19:23:58,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:58,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:23:58,481 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:58,485 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:58,504 INFO L259 McrAutomatonBuilder]: Finished intersection with 129 states and 246 transitions. [2020-04-18 19:23:58,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:58,637 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:23:58,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:58,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:58,638 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 8 states. [2020-04-18 19:23:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:58,731 INFO L93 Difference]: Finished difference Result 231 states and 516 transitions. [2020-04-18 19:23:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 516 transitions. [2020-04-18 19:23:58,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:58,732 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1470257924] [2020-04-18 19:23:58,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:58,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:23:58,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1470257924] [2020-04-18 19:23:58,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:23:58,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:58,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:23:58,734 INFO L87 Difference]: Start difference. First operand 3497 states and 11486 transitions. Second operand 8 states. [2020-04-18 19:23:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:58,859 INFO L93 Difference]: Finished difference Result 5001 states and 16114 transitions. [2020-04-18 19:23:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:23:58,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 19:23:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:58,876 INFO L225 Difference]: With dead ends: 5001 [2020-04-18 19:23:58,876 INFO L226 Difference]: Without dead ends: 2471 [2020-04-18 19:23:58,877 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:23:58,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-04-18 19:23:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2087. [2020-04-18 19:23:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-04-18 19:23:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 6573 transitions. [2020-04-18 19:23:58,949 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 6573 transitions. Word has length 40 [2020-04-18 19:23:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:58,949 INFO L479 AbstractCegarLoop]: Abstraction has 2087 states and 6573 transitions. [2020-04-18 19:23:58,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:23:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 6573 transitions. [2020-04-18 19:23:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:23:58,955 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:58,956 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] [2020-04-18 19:23:58,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:58,956 INFO L82 PathProgramCache]: Analyzing trace with hash 647730612, now seen corresponding path program 1 times [2020-04-18 19:23:58,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:58,957 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1799845551] [2020-04-18 19:23:58,958 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:58,970 INFO L259 McrAutomatonBuilder]: Finished intersection with 547 states and 1566 transitions. [2020-04-18 19:23:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states. [2020-04-18 19:23:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:23:58,976 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:58,977 INFO L82 PathProgramCache]: Analyzing trace with hash 228063796, now seen corresponding path program 2 times [2020-04-18 19:23:58,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:58,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133317359] [2020-04-18 19:23:58,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:59,106 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 19:23:59,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133317359] [2020-04-18 19:23:59,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:59,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:23:59,108 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:59,112 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:59,142 INFO L259 McrAutomatonBuilder]: Finished intersection with 197 states and 458 transitions. [2020-04-18 19:23:59,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:59,223 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:23:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:23:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:23:59,224 INFO L87 Difference]: Start difference. First operand 547 states. Second operand 9 states. [2020-04-18 19:23:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:59,507 INFO L93 Difference]: Finished difference Result 602 states and 1652 transitions. [2020-04-18 19:23:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1652 transitions. [2020-04-18 19:23:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:23:59,511 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:23:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:59,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1487487922, now seen corresponding path program 3 times [2020-04-18 19:23:59,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:59,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531573040] [2020-04-18 19:23:59,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:59,613 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 19:23:59,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531573040] [2020-04-18 19:23:59,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:59,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:23:59,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:59,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:59,694 INFO L259 McrAutomatonBuilder]: Finished intersection with 164 states and 356 transitions. [2020-04-18 19:23:59,694 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:59,807 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:23:59,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:23:59,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:23:59,808 INFO L87 Difference]: Start difference. First operand 602 states and 1652 transitions. Second operand 6 states. [2020-04-18 19:23:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:59,939 INFO L93 Difference]: Finished difference Result 602 states and 1652 transitions. [2020-04-18 19:23:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1652 transitions. [2020-04-18 19:23:59,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:59,941 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1799845551] [2020-04-18 19:23:59,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:59,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:23:59,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1799845551] [2020-04-18 19:23:59,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:23:59,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:59,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:23:59,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:23:59,943 INFO L87 Difference]: Start difference. First operand 2087 states and 6573 transitions. Second operand 13 states. [2020-04-18 19:24:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:00,888 INFO L93 Difference]: Finished difference Result 3101 states and 9627 transitions. [2020-04-18 19:24:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 19:24:00,892 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-04-18 19:24:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:00,901 INFO L225 Difference]: With dead ends: 3101 [2020-04-18 19:24:00,901 INFO L226 Difference]: Without dead ends: 2285 [2020-04-18 19:24:00,903 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=1993, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:24:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-04-18 19:24:00,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1925. [2020-04-18 19:24:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-04-18 19:24:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 5975 transitions. [2020-04-18 19:24:00,960 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 5975 transitions. Word has length 42 [2020-04-18 19:24:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:00,960 INFO L479 AbstractCegarLoop]: Abstraction has 1925 states and 5975 transitions. [2020-04-18 19:24:00,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:24:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 5975 transitions. [2020-04-18 19:24:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:24:00,965 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:00,965 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 19:24:00,965 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1643502774, now seen corresponding path program 1 times [2020-04-18 19:24:00,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:00,966 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1871122335] [2020-04-18 19:24:00,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:00,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 703 states and 2087 transitions. [2020-04-18 19:24:00,987 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states. [2020-04-18 19:24:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:24:00,990 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:00,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:00,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1200069992, now seen corresponding path program 2 times [2020-04-18 19:24:00,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:00,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750797482] [2020-04-18 19:24:00,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:01,138 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 19:24:01,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750797482] [2020-04-18 19:24:01,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:01,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:01,139 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:01,143 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:01,212 INFO L259 McrAutomatonBuilder]: Finished intersection with 251 states and 611 transitions. [2020-04-18 19:24:01,212 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:01,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:24:01,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:24:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:24:01,280 INFO L87 Difference]: Start difference. First operand 703 states. Second operand 9 states. [2020-04-18 19:24:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:01,563 INFO L93 Difference]: Finished difference Result 775 states and 2206 transitions. [2020-04-18 19:24:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2206 transitions. [2020-04-18 19:24:01,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:24:01,568 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:24:01,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:01,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1865457084, now seen corresponding path program 3 times [2020-04-18 19:24:01,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:01,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511349884] [2020-04-18 19:24:01,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:01,679 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 19:24:01,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511349884] [2020-04-18 19:24:01,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:01,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:01,681 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:01,684 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:01,717 INFO L259 McrAutomatonBuilder]: Finished intersection with 215 states and 504 transitions. [2020-04-18 19:24:01,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:01,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:24:01,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:01,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:24:01,833 INFO L87 Difference]: Start difference. First operand 775 states and 2206 transitions. Second operand 7 states. [2020-04-18 19:24:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:01,986 INFO L93 Difference]: Finished difference Result 775 states and 2206 transitions. [2020-04-18 19:24:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2206 transitions. [2020-04-18 19:24:01,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:01,989 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1871122335] [2020-04-18 19:24:01,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:01,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:24:01,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1871122335] [2020-04-18 19:24:01,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:24:01,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:01,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:24:01,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:24:01,991 INFO L87 Difference]: Start difference. First operand 1925 states and 5975 transitions. Second operand 14 states. [2020-04-18 19:24:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:02,807 INFO L93 Difference]: Finished difference Result 2642 states and 7965 transitions. [2020-04-18 19:24:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 19:24:02,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-04-18 19:24:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:02,815 INFO L225 Difference]: With dead ends: 2642 [2020-04-18 19:24:02,816 INFO L226 Difference]: Without dead ends: 1694 [2020-04-18 19:24:02,817 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=451, Invalid=2305, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 19:24:02,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-04-18 19:24:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1478. [2020-04-18 19:24:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-04-18 19:24:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4372 transitions. [2020-04-18 19:24:02,855 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4372 transitions. Word has length 43 [2020-04-18 19:24:02,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:02,855 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 4372 transitions. [2020-04-18 19:24:02,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:24:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4372 transitions. [2020-04-18 19:24:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:02,858 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:02,859 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] [2020-04-18 19:24:02,859 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2087646303, now seen corresponding path program 1 times [2020-04-18 19:24:02,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:02,860 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1870664234] [2020-04-18 19:24:02,861 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:02,878 INFO L259 McrAutomatonBuilder]: Finished intersection with 875 states and 2648 transitions. [2020-04-18 19:24:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states. [2020-04-18 19:24:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:02,888 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1613831113, now seen corresponding path program 2 times [2020-04-18 19:24:02,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:02,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841934922] [2020-04-18 19:24:02,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:02,982 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 19:24:02,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841934922] [2020-04-18 19:24:02,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:02,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:02,983 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:02,987 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:03,019 INFO L259 McrAutomatonBuilder]: Finished intersection with 286 states and 708 transitions. [2020-04-18 19:24:03,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:03,059 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:24:03,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:03,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:24:03,060 INFO L87 Difference]: Start difference. First operand 875 states. Second operand 7 states. [2020-04-18 19:24:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:03,254 INFO L93 Difference]: Finished difference Result 1019 states and 2958 transitions. [2020-04-18 19:24:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 2958 transitions. [2020-04-18 19:24:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:03,258 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:24:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash -374030161, now seen corresponding path program 3 times [2020-04-18 19:24:03,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:03,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245881292] [2020-04-18 19:24:03,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:03,377 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 19:24:03,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245881292] [2020-04-18 19:24:03,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:03,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:03,378 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:03,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:03,424 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 553 transitions. [2020-04-18 19:24:03,424 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:03,517 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:24:03,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:03,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:24:03,518 INFO L87 Difference]: Start difference. First operand 1019 states and 2958 transitions. Second operand 7 states. [2020-04-18 19:24:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:03,701 INFO L93 Difference]: Finished difference Result 1067 states and 3024 transitions. [2020-04-18 19:24:03,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 3024 transitions. [2020-04-18 19:24:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:03,704 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:24:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:03,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2087646303, now seen corresponding path program 4 times [2020-04-18 19:24:03,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:03,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951748978] [2020-04-18 19:24:03,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:03,800 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 19:24:03,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951748978] [2020-04-18 19:24:03,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:03,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:03,802 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:03,806 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:03,828 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 223 transitions. [2020-04-18 19:24:03,829 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:03,870 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:24:03,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:03,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:24:03,871 INFO L87 Difference]: Start difference. First operand 1067 states and 3024 transitions. Second operand 8 states. [2020-04-18 19:24:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:04,108 INFO L93 Difference]: Finished difference Result 1067 states and 3024 transitions. [2020-04-18 19:24:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 3024 transitions. [2020-04-18 19:24:04,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:04,111 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1870664234] [2020-04-18 19:24:04,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:04,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:24:04,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1870664234] [2020-04-18 19:24:04,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:24:04,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:04,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:24:04,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:24:04,113 INFO L87 Difference]: Start difference. First operand 1478 states and 4372 transitions. Second operand 14 states. [2020-04-18 19:24:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:04,507 INFO L93 Difference]: Finished difference Result 1298 states and 3718 transitions. [2020-04-18 19:24:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:24:04,508 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-04-18 19:24:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:04,512 INFO L225 Difference]: With dead ends: 1298 [2020-04-18 19:24:04,512 INFO L226 Difference]: Without dead ends: 776 [2020-04-18 19:24:04,513 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=1565, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:24:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-04-18 19:24:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 740. [2020-04-18 19:24:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-04-18 19:24:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2046 transitions. [2020-04-18 19:24:04,530 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2046 transitions. Word has length 44 [2020-04-18 19:24:04,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:04,531 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 2046 transitions. [2020-04-18 19:24:04,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:24:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2046 transitions. [2020-04-18 19:24:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:04,532 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:04,533 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] [2020-04-18 19:24:04,533 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:04,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:04,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1399559616, now seen corresponding path program 1 times [2020-04-18 19:24:04,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:04,534 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [576405941] [2020-04-18 19:24:04,535 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:04,571 INFO L259 McrAutomatonBuilder]: Finished intersection with 1435 states and 4566 transitions. [2020-04-18 19:24:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states. [2020-04-18 19:24:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:04,589 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:04,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:04,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1507543530, now seen corresponding path program 2 times [2020-04-18 19:24:04,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:04,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714265371] [2020-04-18 19:24:04,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:04,694 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 19:24:04,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714265371] [2020-04-18 19:24:04,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:04,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:04,695 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:04,700 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:04,739 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 500 transitions. [2020-04-18 19:24:04,740 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:04,782 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:24:04,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:04,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:24:04,783 INFO L87 Difference]: Start difference. First operand 1435 states. Second operand 7 states. [2020-04-18 19:24:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:04,985 INFO L93 Difference]: Finished difference Result 1867 states and 5784 transitions. [2020-04-18 19:24:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 5784 transitions. [2020-04-18 19:24:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:04,990 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:24:04,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:04,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1654096816, now seen corresponding path program 3 times [2020-04-18 19:24:04,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:04,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405420660] [2020-04-18 19:24:04,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:05,141 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 19:24:05,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405420660] [2020-04-18 19:24:05,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:05,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:24:05,142 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:05,147 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:05,201 INFO L259 McrAutomatonBuilder]: Finished intersection with 264 states and 615 transitions. [2020-04-18 19:24:05,202 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:05,234 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:24:05,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:24:05,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:24:05,235 INFO L87 Difference]: Start difference. First operand 1867 states and 5784 transitions. Second operand 6 states. [2020-04-18 19:24:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:05,340 INFO L93 Difference]: Finished difference Result 2711 states and 8068 transitions. [2020-04-18 19:24:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 8068 transitions. [2020-04-18 19:24:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:05,347 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:24:05,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:05,347 INFO L82 PathProgramCache]: Analyzing trace with hash 37096590, now seen corresponding path program 4 times [2020-04-18 19:24:05,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:05,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224468695] [2020-04-18 19:24:05,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:05,459 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 19:24:05,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224468695] [2020-04-18 19:24:05,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:05,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:05,460 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:05,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:05,542 INFO L259 McrAutomatonBuilder]: Finished intersection with 260 states and 609 transitions. [2020-04-18 19:24:05,542 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:05,634 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:24:05,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:05,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:24:05,635 INFO L87 Difference]: Start difference. First operand 2711 states and 8068 transitions. Second operand 7 states. [2020-04-18 19:24:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:05,892 INFO L93 Difference]: Finished difference Result 3093 states and 8730 transitions. [2020-04-18 19:24:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 8730 transitions. [2020-04-18 19:24:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:05,897 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:24:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:05,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1775541504, now seen corresponding path program 5 times [2020-04-18 19:24:05,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:05,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737230539] [2020-04-18 19:24:05,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:05,994 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 19:24:05,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737230539] [2020-04-18 19:24:05,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:05,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:05,995 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:05,999 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:06,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 245 transitions. [2020-04-18 19:24:06,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:06,063 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:24:06,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:06,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:24:06,064 INFO L87 Difference]: Start difference. First operand 3093 states and 8730 transitions. Second operand 8 states. [2020-04-18 19:24:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:06,410 INFO L93 Difference]: Finished difference Result 3173 states and 8802 transitions. [2020-04-18 19:24:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 8802 transitions. [2020-04-18 19:24:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:06,415 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:24:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:06,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1193599966, now seen corresponding path program 6 times [2020-04-18 19:24:06,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:06,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458930403] [2020-04-18 19:24:06,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:06,513 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 19:24:06,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458930403] [2020-04-18 19:24:06,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:06,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:06,514 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:06,518 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:06,552 INFO L259 McrAutomatonBuilder]: Finished intersection with 209 states and 440 transitions. [2020-04-18 19:24:06,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:06,783 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:24:06,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:24:06,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1781, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:24:06,785 INFO L87 Difference]: Start difference. First operand 3173 states and 8802 transitions. Second operand 10 states. [2020-04-18 19:24:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:07,205 INFO L93 Difference]: Finished difference Result 5240 states and 14069 transitions. [2020-04-18 19:24:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5240 states and 14069 transitions. [2020-04-18 19:24:07,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:07,213 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [576405941] [2020-04-18 19:24:07,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:07,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:24:07,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [576405941] [2020-04-18 19:24:07,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:24:07,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:24:07,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=2661, Unknown=0, NotChecked=0, Total=3080 [2020-04-18 19:24:07,215 INFO L87 Difference]: Start difference. First operand 740 states and 2046 transitions. Second operand 20 states. [2020-04-18 19:24:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:07,796 INFO L93 Difference]: Finished difference Result 686 states and 1884 transitions. [2020-04-18 19:24:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:24:07,797 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-04-18 19:24:07,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:07,798 INFO L225 Difference]: With dead ends: 686 [2020-04-18 19:24:07,798 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:24:07,799 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1672 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=702, Invalid=4410, Unknown=0, NotChecked=0, Total=5112 [2020-04-18 19:24:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:24:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:24:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:24:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:24:07,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 19:24:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:07,801 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:24:07,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:24:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:24:07,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:07,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:24:07 BasicIcfg [2020-04-18 19:24:07,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:24:07,810 INFO L168 Benchmark]: Toolchain (without parser) took 15273.32 ms. Allocated memory was 136.8 MB in the beginning and 544.2 MB in the end (delta: 407.4 MB). Free memory was 99.6 MB in the beginning and 38.9 MB in the end (delta: 60.7 MB). Peak memory consumption was 468.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:07,811 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 19:24:07,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.05 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 97.8 MB in the beginning and 158.2 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:07,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.03 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 156.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:07,813 INFO L168 Benchmark]: Boogie Preprocessor took 27.63 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:07,814 INFO L168 Benchmark]: RCFGBuilder took 473.79 ms. Allocated memory is still 201.3 MB. Free memory was 154.1 MB in the beginning and 132.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:07,814 INFO L168 Benchmark]: TraceAbstraction took 13980.16 ms. Allocated memory was 201.3 MB in the beginning and 544.2 MB in the end (delta: 342.9 MB). Free memory was 131.9 MB in the beginning and 38.9 MB in the end (delta: 93.0 MB). Peak memory consumption was 435.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:07,818 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.05 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 97.8 MB in the beginning and 158.2 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.03 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 156.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.63 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.79 ms. Allocated memory is still 201.3 MB. Free memory was 154.1 MB in the beginning and 132.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13980.16 ms. Allocated memory was 201.3 MB in the beginning and 544.2 MB in the end (delta: 342.9 MB). Free memory was 131.9 MB in the beginning and 38.9 MB in the end (delta: 93.0 MB). Peak memory consumption was 435.9 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 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 721 SDtfs, 2443 SDslu, 4435 SDs, 0 SdLazy, 894 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1136 GetRequests, 861 SyntacticMatches, 7 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3931 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7295occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 3956 StatesRemovedByMinimization, 7 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...