/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:52:09,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:52:09,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:52:09,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:52:09,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:52:09,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:52:09,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:52:09,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:52:09,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:52:09,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:52:09,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:52:09,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:52:09,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:52:09,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:52:09,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:52:09,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:52:09,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:52:09,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:52:10,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:52:10,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:52:10,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:52:10,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:52:10,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:52:10,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:52:10,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:52:10,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:52:10,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:52:10,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:52:10,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:52:10,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:52:10,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:52:10,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:52:10,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:52:10,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:52:10,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:52:10,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:52:10,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:52:10,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:52:10,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:52:10,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:52:10,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:52:10,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:52:10,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:52:10,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:52:10,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:52:10,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:52:10,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:52:10,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:52:10,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:52:10,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:52:10,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:52:10,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:52:10,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:52:10,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:52:10,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:52:10,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:52:10,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:52:10,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:52:10,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:52:10,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:52:10,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:52:10,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:52:10,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:52:10,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:52:10,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:52:10,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:52:10,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:52:10,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:52:10,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:52:10,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:52:10,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:52:10,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:52:10,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:52:10,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:52:10,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:52:10,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:52:10,410 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:52:10,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-12 19:52:10,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc84eaed/0cf04f4f74bd4eb880bb5be83822ec1c/FLAG672f84ca6 [2020-10-12 19:52:11,272 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:52:11,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-12 19:52:11,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc84eaed/0cf04f4f74bd4eb880bb5be83822ec1c/FLAG672f84ca6 [2020-10-12 19:52:11,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc84eaed/0cf04f4f74bd4eb880bb5be83822ec1c [2020-10-12 19:52:11,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:52:11,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:52:11,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:52:11,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:52:11,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:52:11,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:52:11" (1/1) ... [2020-10-12 19:52:11,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3336fb4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:11, skipping insertion in model container [2020-10-12 19:52:11,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:52:11" (1/1) ... [2020-10-12 19:52:11,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:52:11,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:52:12,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:52:12,745 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:52:13,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:52:13,184 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:52:13,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13 WrapperNode [2020-10-12 19:52:13,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:52:13,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:52:13,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:52:13,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:52:13,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... [2020-10-12 19:52:13,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... [2020-10-12 19:52:13,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... [2020-10-12 19:52:13,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... [2020-10-12 19:52:13,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... [2020-10-12 19:52:13,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... [2020-10-12 19:52:13,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... [2020-10-12 19:52:13,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:52:13,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:52:13,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:52:13,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:52:13,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 19:52:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:52:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:52:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:52:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:52:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:52:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:52:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:52:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:52:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:52:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:52:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:52:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:52:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:52:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:52:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:52:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:52:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:52:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:52:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:52:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:52:16,987 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:52:16,987 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:52:16,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:52:16 BoogieIcfgContainer [2020-10-12 19:52:16,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:52:17,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:52:17,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:52:17,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:52:17,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:52:11" (1/3) ... [2020-10-12 19:52:17,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213dda0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:52:17, skipping insertion in model container [2020-10-12 19:52:17,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:52:13" (2/3) ... [2020-10-12 19:52:17,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213dda0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:52:17, skipping insertion in model container [2020-10-12 19:52:17,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:52:16" (3/3) ... [2020-10-12 19:52:17,008 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-12 19:52:17,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:52:17,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-12 19:52:17,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-12 19:52:17,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:52:17,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:52:17,077 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:52:17,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:52:17,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:52:17,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:52:17,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:52:17,078 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:52:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2020-10-12 19:52:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:52:17,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:17,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:52:17,147 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:17,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1856988322, now seen corresponding path program 1 times [2020-10-12 19:52:17,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:17,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936329620] [2020-10-12 19:52:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:20,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:22,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:22,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:52:22,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:52:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:52:22,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:52:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:52:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:52:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:52:24,226 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:52:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:24,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:24,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 19:52:24,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:52:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:52:24,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:24,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936329620] [2020-10-12 19:52:24,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:24,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:52:24,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42523721] [2020-10-12 19:52:24,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:52:24,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:52:24,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:52:24,408 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 11 states. [2020-10-12 19:52:25,741 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 509 [2020-10-12 19:52:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:52:43,586 INFO L93 Difference]: Finished difference Result 4471 states and 7470 transitions. [2020-10-12 19:52:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:52:43,588 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-12 19:52:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:52:43,630 INFO L225 Difference]: With dead ends: 4471 [2020-10-12 19:52:43,630 INFO L226 Difference]: Without dead ends: 3269 [2020-10-12 19:52:43,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:52:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2020-10-12 19:52:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2759. [2020-10-12 19:52:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-12 19:52:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3629 transitions. [2020-10-12 19:52:43,877 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3629 transitions. Word has length 56 [2020-10-12 19:52:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:52:43,877 INFO L479 AbstractCegarLoop]: Abstraction has 2759 states and 3629 transitions. [2020-10-12 19:52:43,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:52:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3629 transitions. [2020-10-12 19:52:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:52:43,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:43,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:52:43,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:52:43,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:43,885 INFO L82 PathProgramCache]: Analyzing trace with hash -867241665, now seen corresponding path program 1 times [2020-10-12 19:52:43,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:43,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125857427] [2020-10-12 19:52:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:52:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:52:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 19:52:48,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:52:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:52:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:52:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:52:50,827 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:52:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:50,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:50,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:50,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:50,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:50,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 19:52:50,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:52:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:52:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:50,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125857427] [2020-10-12 19:52:50,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:50,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:52:50,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354990366] [2020-10-12 19:52:50,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:52:50,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:50,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:52:50,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:52:50,975 INFO L87 Difference]: Start difference. First operand 2759 states and 3629 transitions. Second operand 11 states. [2020-10-12 19:52:52,231 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 510 [2020-10-12 19:53:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:53:06,731 INFO L93 Difference]: Finished difference Result 6295 states and 8833 transitions. [2020-10-12 19:53:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:53:06,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-12 19:53:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:53:06,760 INFO L225 Difference]: With dead ends: 6295 [2020-10-12 19:53:06,760 INFO L226 Difference]: Without dead ends: 5831 [2020-10-12 19:53:06,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:53:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2020-10-12 19:53:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 4320. [2020-10-12 19:53:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4320 states. [2020-10-12 19:53:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 5851 transitions. [2020-10-12 19:53:06,998 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 5851 transitions. Word has length 57 [2020-10-12 19:53:06,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:53:06,999 INFO L479 AbstractCegarLoop]: Abstraction has 4320 states and 5851 transitions. [2020-10-12 19:53:06,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:53:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 5851 transitions. [2020-10-12 19:53:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:53:07,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:53:07,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:53:07,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:53:07,005 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:53:07,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:53:07,006 INFO L82 PathProgramCache]: Analyzing trace with hash -108202759, now seen corresponding path program 1 times [2020-10-12 19:53:07,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:53:07,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321637934] [2020-10-12 19:53:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:53:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:53:07,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:12,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:12,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:53:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:53:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-12 19:53:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:53:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:53:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:53:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:53:13,570 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:53:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:53:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:53:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:13,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:53:13,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:53:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 19:53:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:53:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:53:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:53:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:53:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:53:13,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321637934] [2020-10-12 19:53:13,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:53:13,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:53:13,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054421532] [2020-10-12 19:53:13,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:53:13,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:53:13,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:53:13,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:53:13,707 INFO L87 Difference]: Start difference. First operand 4320 states and 5851 transitions. Second operand 13 states. [2020-10-12 19:53:14,969 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 512 [2020-10-12 19:53:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:53:27,115 INFO L93 Difference]: Finished difference Result 9205 states and 13070 transitions. [2020-10-12 19:53:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:53:27,116 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 19:53:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:53:27,145 INFO L225 Difference]: With dead ends: 9205 [2020-10-12 19:53:27,145 INFO L226 Difference]: Without dead ends: 6660 [2020-10-12 19:53:27,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:53:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6660 states. [2020-10-12 19:53:27,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6660 to 2833. [2020-10-12 19:53:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-10-12 19:53:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3805 transitions. [2020-10-12 19:53:27,339 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3805 transitions. Word has length 57 [2020-10-12 19:53:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:53:27,342 INFO L479 AbstractCegarLoop]: Abstraction has 2833 states and 3805 transitions. [2020-10-12 19:53:27,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:53:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3805 transitions. [2020-10-12 19:53:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 19:53:27,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:53:27,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:53:27,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:53:27,350 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:53:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:53:27,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1304463258, now seen corresponding path program 1 times [2020-10-12 19:53:27,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:53:27,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741511236] [2020-10-12 19:53:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:53:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:53:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:29,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:30,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:32,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:32,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 19:53:32,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:53:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-12 19:53:32,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:53:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:53:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:53:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:53:34,311 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:53:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:53:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:53:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:34,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:53:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:53:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 19:53:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:53:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:53:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:53:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:53:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:53:34,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741511236] [2020-10-12 19:53:34,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:53:34,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:53:34,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401099659] [2020-10-12 19:53:34,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:53:34,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:53:34,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:53:34,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:53:34,446 INFO L87 Difference]: Start difference. First operand 2833 states and 3805 transitions. Second operand 16 states. [2020-10-12 19:53:34,594 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-12 19:53:37,223 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 538 DAG size of output: 536 [2020-10-12 19:53:38,733 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-12 19:53:52,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:53:52,681 INFO L93 Difference]: Finished difference Result 5355 states and 7480 transitions. [2020-10-12 19:53:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:53:52,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-12 19:53:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:53:52,697 INFO L225 Difference]: With dead ends: 5355 [2020-10-12 19:53:52,697 INFO L226 Difference]: Without dead ends: 4644 [2020-10-12 19:53:52,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:53:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2020-10-12 19:53:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 2830. [2020-10-12 19:53:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2020-10-12 19:53:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3799 transitions. [2020-10-12 19:53:52,903 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3799 transitions. Word has length 59 [2020-10-12 19:53:52,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:53:52,906 INFO L479 AbstractCegarLoop]: Abstraction has 2830 states and 3799 transitions. [2020-10-12 19:53:52,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:53:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3799 transitions. [2020-10-12 19:53:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 19:53:52,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:53:52,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:53:52,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:53:52,913 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:53:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:53:52,914 INFO L82 PathProgramCache]: Analyzing trace with hash -477493960, now seen corresponding path program 1 times [2020-10-12 19:53:52,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:53:52,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068258173] [2020-10-12 19:53:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:53:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:53:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:54,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:57,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:57,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 19:53:57,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:53:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:53:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:53:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:53:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:53:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:53:59,598 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:53:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:53:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:53:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:59,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:59,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:53:59,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:53:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:53:59,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:53:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:53:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:53:59,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:53:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:53:59,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068258173] [2020-10-12 19:53:59,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:53:59,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:53:59,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468836505] [2020-10-12 19:53:59,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:53:59,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:53:59,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:53:59,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:53:59,685 INFO L87 Difference]: Start difference. First operand 2830 states and 3799 transitions. Second operand 13 states. [2020-10-12 19:54:01,025 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-12 19:54:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:54:12,892 INFO L93 Difference]: Finished difference Result 4655 states and 6553 transitions. [2020-10-12 19:54:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:54:12,893 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-12 19:54:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:54:12,906 INFO L225 Difference]: With dead ends: 4655 [2020-10-12 19:54:12,906 INFO L226 Difference]: Without dead ends: 3921 [2020-10-12 19:54:12,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:54:12,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2020-10-12 19:54:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 2830. [2020-10-12 19:54:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2020-10-12 19:54:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3798 transitions. [2020-10-12 19:54:13,092 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3798 transitions. Word has length 59 [2020-10-12 19:54:13,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:54:13,092 INFO L479 AbstractCegarLoop]: Abstraction has 2830 states and 3798 transitions. [2020-10-12 19:54:13,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:54:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3798 transitions. [2020-10-12 19:54:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 19:54:13,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:54:13,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:54:13,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:54:13,097 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:54:13,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:54:13,097 INFO L82 PathProgramCache]: Analyzing trace with hash 519506083, now seen corresponding path program 1 times [2020-10-12 19:54:13,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:54:13,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509678697] [2020-10-12 19:54:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:54:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:14,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:16,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:18,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:18,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 19:54:18,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:54:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:54:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:54:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:54:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:54:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:54:19,639 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:54:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:54:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:19,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:19,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:54:19,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:54:19,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 19:54:19,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:54:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:54:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:54:19,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:54:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:54:19,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509678697] [2020-10-12 19:54:19,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:54:19,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:54:19,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096932006] [2020-10-12 19:54:19,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:54:19,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:54:19,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:54:19,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:54:19,745 INFO L87 Difference]: Start difference. First operand 2830 states and 3798 transitions. Second operand 17 states. [2020-10-12 19:54:19,878 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-10-12 19:54:22,618 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 541 DAG size of output: 527 [2020-10-12 19:54:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:54:36,650 INFO L93 Difference]: Finished difference Result 7224 states and 10135 transitions. [2020-10-12 19:54:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 19:54:36,651 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-10-12 19:54:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:54:36,676 INFO L225 Difference]: With dead ends: 7224 [2020-10-12 19:54:36,677 INFO L226 Difference]: Without dead ends: 5801 [2020-10-12 19:54:36,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=454, Invalid=1802, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 19:54:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-10-12 19:54:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 3885. [2020-10-12 19:54:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3885 states. [2020-10-12 19:54:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5359 transitions. [2020-10-12 19:54:37,009 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5359 transitions. Word has length 59 [2020-10-12 19:54:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:54:37,010 INFO L479 AbstractCegarLoop]: Abstraction has 3885 states and 5359 transitions. [2020-10-12 19:54:37,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:54:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5359 transitions. [2020-10-12 19:54:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 19:54:37,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:54:37,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:54:37,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:54:37,014 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:54:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:54:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1087890717, now seen corresponding path program 1 times [2020-10-12 19:54:37,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:54:37,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670904490] [2020-10-12 19:54:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:54:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:37,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:39,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:41,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:42,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:42,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 19:54:42,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:54:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:54:42,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:54:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:54:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:54:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:54:43,514 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:54:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:54:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:43,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:54:43,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:54:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 19:54:43,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:54:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:54:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:54:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:54:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:54:43,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670904490] [2020-10-12 19:54:43,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:54:43,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:54:43,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478495916] [2020-10-12 19:54:43,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:54:43,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:54:43,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:54:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:54:43,604 INFO L87 Difference]: Start difference. First operand 3885 states and 5359 transitions. Second operand 15 states. [2020-10-12 19:54:46,242 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 526 DAG size of output: 525 [2020-10-12 19:54:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:54:57,647 INFO L93 Difference]: Finished difference Result 14350 states and 21034 transitions. [2020-10-12 19:54:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 19:54:57,648 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-12 19:54:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:54:57,671 INFO L225 Difference]: With dead ends: 14350 [2020-10-12 19:54:57,671 INFO L226 Difference]: Without dead ends: 11368 [2020-10-12 19:54:57,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=472, Invalid=1598, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 19:54:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11368 states. [2020-10-12 19:54:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11368 to 4684. [2020-10-12 19:54:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4684 states. [2020-10-12 19:54:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 6756 transitions. [2020-10-12 19:54:58,142 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 6756 transitions. Word has length 59 [2020-10-12 19:54:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:54:58,142 INFO L479 AbstractCegarLoop]: Abstraction has 4684 states and 6756 transitions. [2020-10-12 19:54:58,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:54:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 6756 transitions. [2020-10-12 19:54:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 19:54:58,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:54:58,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:54:58,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:54:58,146 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:54:58,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:54:58,146 INFO L82 PathProgramCache]: Analyzing trace with hash -226433332, now seen corresponding path program 1 times [2020-10-12 19:54:58,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:54:58,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52564354] [2020-10-12 19:54:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:54:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:58,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:02,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:02,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 19:55:02,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:55:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4734 [2020-10-12 19:55:02,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:55:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:55:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:55:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:03,143 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-10-12 19:55:03,259 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-10-12 19:55:04,759 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:55:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:55:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:04,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:04,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:55:04,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:55:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:55:04,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:55:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:55:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:55:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:55:04,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52564354] [2020-10-12 19:55:04,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:55:04,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:55:04,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496449220] [2020-10-12 19:55:04,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:55:04,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:55:04,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:55:04,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:55:04,831 INFO L87 Difference]: Start difference. First operand 4684 states and 6756 transitions. Second operand 12 states. [2020-10-12 19:55:06,242 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 524 [2020-10-12 19:55:06,509 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-12 19:55:06,767 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 19:55:07,203 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-12 19:55:07,697 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-12 19:55:08,217 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-12 19:55:08,453 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-12 19:55:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:55:16,958 INFO L93 Difference]: Finished difference Result 20199 states and 30561 transitions. [2020-10-12 19:55:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:55:16,959 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-12 19:55:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:55:17,000 INFO L225 Difference]: With dead ends: 20199 [2020-10-12 19:55:17,001 INFO L226 Difference]: Without dead ends: 17094 [2020-10-12 19:55:17,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:55:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17094 states. [2020-10-12 19:55:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17094 to 4671. [2020-10-12 19:55:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4671 states. [2020-10-12 19:55:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 6740 transitions. [2020-10-12 19:55:17,683 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 6740 transitions. Word has length 60 [2020-10-12 19:55:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:55:17,683 INFO L479 AbstractCegarLoop]: Abstraction has 4671 states and 6740 transitions. [2020-10-12 19:55:17,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:55:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 6740 transitions. [2020-10-12 19:55:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 19:55:17,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:55:17,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:55:17,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:55:17,685 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:55:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:55:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2037603292, now seen corresponding path program 1 times [2020-10-12 19:55:17,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:55:17,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699081302] [2020-10-12 19:55:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:55:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:17,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:20,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:20,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 19:55:20,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:55:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3266 [2020-10-12 19:55:20,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:55:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:55:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:55:20,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:22,702 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:55:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:55:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:55:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:55:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:55:22,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:55:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:55:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:55:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:55:22,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699081302] [2020-10-12 19:55:22,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:55:22,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:55:22,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091220603] [2020-10-12 19:55:22,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:55:22,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:55:22,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:55:22,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:55:22,774 INFO L87 Difference]: Start difference. First operand 4671 states and 6740 transitions. Second operand 12 states. [2020-10-12 19:55:25,644 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 535 DAG size of output: 527 [2020-10-12 19:55:26,279 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-12 19:55:36,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:55:36,882 INFO L93 Difference]: Finished difference Result 13817 states and 20731 transitions. [2020-10-12 19:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:55:36,883 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-12 19:55:36,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:55:36,906 INFO L225 Difference]: With dead ends: 13817 [2020-10-12 19:55:36,906 INFO L226 Difference]: Without dead ends: 13813 [2020-10-12 19:55:36,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:55:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13813 states. [2020-10-12 19:55:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13813 to 4667. [2020-10-12 19:55:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4667 states. [2020-10-12 19:55:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 6735 transitions. [2020-10-12 19:55:37,547 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 6735 transitions. Word has length 60 [2020-10-12 19:55:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:55:37,548 INFO L479 AbstractCegarLoop]: Abstraction has 4667 states and 6735 transitions. [2020-10-12 19:55:37,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:55:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 6735 transitions. [2020-10-12 19:55:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 19:55:37,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:55:37,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:55:37,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:55:37,550 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:55:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:55:37,550 INFO L82 PathProgramCache]: Analyzing trace with hash -847180308, now seen corresponding path program 1 times [2020-10-12 19:55:37,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:55:37,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949527190] [2020-10-12 19:55:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:55:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:40,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:40,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 19:55:40,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:55:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3302 [2020-10-12 19:55:40,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:55:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:55:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:55:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:42,249 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-12 19:55:42,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:55:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:42,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:55:42,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:55:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:55:42,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:55:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:55:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:55:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:55:42,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949527190] [2020-10-12 19:55:42,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:55:42,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:55:42,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938082652] [2020-10-12 19:55:42,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:55:42,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:55:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:55:42,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:55:42,297 INFO L87 Difference]: Start difference. First operand 4667 states and 6735 transitions. Second operand 13 states. [2020-10-12 19:55:43,490 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-12 19:55:51,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:55:51,548 INFO L93 Difference]: Finished difference Result 11149 states and 16689 transitions. [2020-10-12 19:55:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:55:51,549 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-12 19:55:51,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:55:51,561 INFO L225 Difference]: With dead ends: 11149 [2020-10-12 19:55:51,562 INFO L226 Difference]: Without dead ends: 8844 [2020-10-12 19:55:51,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:55:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8844 states. [2020-10-12 19:55:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8844 to 5060. [2020-10-12 19:55:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5060 states. [2020-10-12 19:55:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 7328 transitions. [2020-10-12 19:55:52,399 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 7328 transitions. Word has length 60 [2020-10-12 19:55:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:55:52,399 INFO L479 AbstractCegarLoop]: Abstraction has 5060 states and 7328 transitions. [2020-10-12 19:55:52,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:55:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 7328 transitions. [2020-10-12 19:55:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 19:55:52,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:55:52,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:55:52,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:55:52,405 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:55:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:55:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -296276202, now seen corresponding path program 1 times [2020-10-12 19:55:52,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:55:52,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594681209] [2020-10-12 19:55:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:55:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking...