/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/eca-rers2012/Problem12_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:13:07,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:13:07,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:13:07,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:13:07,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:13:07,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:13:07,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:13:07,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:13:07,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:13:07,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:13:07,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:13:07,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:13:07,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:13:07,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:13:07,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:13:07,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:13:07,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:13:07,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:13:07,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:13:07,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:13:07,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:13:07,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:13:07,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:13:07,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:13:07,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:13:07,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:13:07,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:13:07,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:13:07,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:13:07,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:13:07,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:13:07,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:13:07,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:13:07,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:13:07,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:13:07,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:13:07,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:13:07,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:13:07,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:13:07,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:13:08,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:13:08,002 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 [2020-10-14 21:13:08,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:13:08,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:13:08,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:13:08,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:13:08,065 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:13:08,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:13:08,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:13:08,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:13:08,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:13:08,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:13:08,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:13:08,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:13:08,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:13:08,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:13:08,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:13:08,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:13:08,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:13:08,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:13:08,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:13:08,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:13:08,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:13:08,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:13:08,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:13:08,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:13:08,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:13:08,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:13:08,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:13:08,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:13:08,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:13:08,081 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:13:08,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:13:08,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:13:08,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:13:08,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:13:08,467 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:13:08,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2020-10-14 21:13:08,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4035dc533/d8e4dcb5bdd64397ac61f32f986e6a5a/FLAGa962e2cf7 [2020-10-14 21:13:09,437 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:13:09,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2020-10-14 21:13:09,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4035dc533/d8e4dcb5bdd64397ac61f32f986e6a5a/FLAGa962e2cf7 [2020-10-14 21:13:09,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4035dc533/d8e4dcb5bdd64397ac61f32f986e6a5a [2020-10-14 21:13:09,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:13:09,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:13:09,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:09,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:13:09,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:13:09,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:09" (1/1) ... [2020-10-14 21:13:09,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535e39d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:09, skipping insertion in model container [2020-10-14 21:13:09,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:09" (1/1) ... [2020-10-14 21:13:09,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:13:09,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:13:11,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:11,398 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:13:12,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:12,055 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:13:12,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12 WrapperNode [2020-10-14 21:13:12,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:12,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:13:12,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:13:12,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:13:12,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (1/1) ... [2020-10-14 21:13:12,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (1/1) ... [2020-10-14 21:13:12,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (1/1) ... [2020-10-14 21:13:12,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (1/1) ... [2020-10-14 21:13:12,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (1/1) ... [2020-10-14 21:13:12,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (1/1) ... [2020-10-14 21:13:12,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (1/1) ... [2020-10-14 21:13:12,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:13:12,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:13:12,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:13:12,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:13:12,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (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 [2020-10-14 21:13:12,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:13:12,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:13:12,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:13:12,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:13:12,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:13:12,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:13:12,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:13:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:13:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:13:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:13:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:13:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:13:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:13:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:13:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:13:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:13:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:13:18,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:13:18,597 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:13:18,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:18 BoogieIcfgContainer [2020-10-14 21:13:18,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:13:18,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:13:18,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:13:18,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:13:18,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:09" (1/3) ... [2020-10-14 21:13:18,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cecd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:18, skipping insertion in model container [2020-10-14 21:13:18,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:12" (2/3) ... [2020-10-14 21:13:18,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cecd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:18, skipping insertion in model container [2020-10-14 21:13:18,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:18" (3/3) ... [2020-10-14 21:13:18,622 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label28.c [2020-10-14 21:13:18,637 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:13:18,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:13:18,672 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:13:18,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:13:18,709 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:13:18,709 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:13:18,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:13:18,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:13:18,710 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:13:18,710 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:13:18,710 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:13:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:13:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 21:13:18,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:18,772 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] [2020-10-14 21:13:18,773 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash 732725797, now seen corresponding path program 1 times [2020-10-14 21:13:18,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:18,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99984049] [2020-10-14 21:13:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:19,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 21:13:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:19,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-14 21:13:19,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:19,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 21:13:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:13:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:19,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:19,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:19,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:13:19,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:19,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:13:19,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99984049] [2020-10-14 21:13:19,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:13:19,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:13:19,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505424825] [2020-10-14 21:13:19,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:13:19,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:19,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:13:19,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:13:19,597 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:13:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:29,021 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:13:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:13:29,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 21:13:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:29,085 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:13:29,085 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:13:29,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:13:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:13:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:13:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:13:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-14 21:13:29,337 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 26 [2020-10-14 21:13:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:29,338 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-14 21:13:29,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:13:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-14 21:13:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 21:13:29,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:29,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:13:29,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:13:29,346 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:29,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:29,347 INFO L82 PathProgramCache]: Analyzing trace with hash -240105607, now seen corresponding path program 1 times [2020-10-14 21:13:29,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:29,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667791939] [2020-10-14 21:13:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:30,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:30,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 21:13:30,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:13:30,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1164 [2020-10-14 21:13:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:30,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:13:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:13:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:13:30,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:30,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:30,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:30,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:13:30,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:30,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:30,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:30,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:13:30,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:13:30,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:13:30,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:30,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:13:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:13:30,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667791939] [2020-10-14 21:13:30,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:30,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:13:30,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737106788] [2020-10-14 21:13:30,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:13:30,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:30,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:13:30,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:13:30,908 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 6 states. [2020-10-14 21:13:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:41,083 INFO L93 Difference]: Finished difference Result 4668 states and 8256 transitions. [2020-10-14 21:13:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:13:41,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-14 21:13:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:41,117 INFO L225 Difference]: With dead ends: 4668 [2020-10-14 21:13:41,118 INFO L226 Difference]: Without dead ends: 3121 [2020-10-14 21:13:41,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:13:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-14 21:13:41,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3106. [2020-10-14 21:13:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-14 21:13:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5317 transitions. [2020-10-14 21:13:41,257 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5317 transitions. Word has length 95 [2020-10-14 21:13:41,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:41,258 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 5317 transitions. [2020-10-14 21:13:41,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:13:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5317 transitions. [2020-10-14 21:13:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 21:13:41,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:41,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:13:41,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:13:41,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash -163504371, now seen corresponding path program 1 times [2020-10-14 21:13:41,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:41,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71776556] [2020-10-14 21:13:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:41,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:41,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:41,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:13:41,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:13:41,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 21:13:41,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:41,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:13:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 21:13:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:42,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:42,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:42,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:13:42,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:42,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:42,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:42,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:13:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:13:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:42,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:13:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:13:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:13:42,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71776556] [2020-10-14 21:13:42,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:42,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:13:42,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984000170] [2020-10-14 21:13:42,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:13:42,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:42,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:13:42,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:13:42,300 INFO L87 Difference]: Start difference. First operand 3106 states and 5317 transitions. Second operand 6 states. [2020-10-14 21:13:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:53,198 INFO L93 Difference]: Finished difference Result 9365 states and 16196 transitions. [2020-10-14 21:13:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:13:53,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-14 21:13:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:53,241 INFO L225 Difference]: With dead ends: 9365 [2020-10-14 21:13:53,241 INFO L226 Difference]: Without dead ends: 6265 [2020-10-14 21:13:53,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:13:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2020-10-14 21:13:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 6242. [2020-10-14 21:13:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6242 states. [2020-10-14 21:13:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6242 states to 6242 states and 9289 transitions. [2020-10-14 21:13:53,442 INFO L78 Accepts]: Start accepts. Automaton has 6242 states and 9289 transitions. Word has length 101 [2020-10-14 21:13:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:53,444 INFO L479 AbstractCegarLoop]: Abstraction has 6242 states and 9289 transitions. [2020-10-14 21:13:53,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:13:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6242 states and 9289 transitions. [2020-10-14 21:13:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 21:13:53,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:53,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:13:53,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:13:53,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash 862021209, now seen corresponding path program 1 times [2020-10-14 21:13:53,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:53,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898833965] [2020-10-14 21:13:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:54,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:54,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:13:54,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:13:54,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-14 21:13:54,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:54,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:13:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:54,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:54,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:13:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:54,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:54,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:54,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:13:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 21:13:54,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:54,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:13:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:13:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:13:54,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898833965] [2020-10-14 21:13:54,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:13:54,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:13:54,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056277712] [2020-10-14 21:13:54,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:13:54,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:54,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:13:54,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:13:54,626 INFO L87 Difference]: Start difference. First operand 6242 states and 9289 transitions. Second operand 7 states. [2020-10-14 21:14:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:09,769 INFO L93 Difference]: Finished difference Result 17473 states and 26914 transitions. [2020-10-14 21:14:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:09,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-14 21:14:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:09,858 INFO L225 Difference]: With dead ends: 17473 [2020-10-14 21:14:09,858 INFO L226 Difference]: Without dead ends: 11237 [2020-10-14 21:14:09,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:14:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11237 states. [2020-10-14 21:14:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11237 to 11040. [2020-10-14 21:14:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11040 states. [2020-10-14 21:14:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 15855 transitions. [2020-10-14 21:14:10,598 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 15855 transitions. Word has length 111 [2020-10-14 21:14:10,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:10,600 INFO L479 AbstractCegarLoop]: Abstraction has 11040 states and 15855 transitions. [2020-10-14 21:14:10,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 15855 transitions. [2020-10-14 21:14:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 21:14:10,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:10,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:14:10,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:14:10,616 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:10,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1410063296, now seen corresponding path program 1 times [2020-10-14 21:14:10,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:10,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230956985] [2020-10-14 21:14:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:14:11,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-14 21:14:11,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:11,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:14:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:11,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:11,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:11,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:14:11,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:11,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:12,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:14:12,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 21:14:12,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:12,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:14:12,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:14:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:12,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230956985] [2020-10-14 21:14:12,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:12,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:12,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564614141] [2020-10-14 21:14:12,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:12,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:12,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:12,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:12,185 INFO L87 Difference]: Start difference. First operand 11040 states and 15855 transitions. Second operand 7 states. [2020-10-14 21:14:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:26,961 INFO L93 Difference]: Finished difference Result 27962 states and 41092 transitions. [2020-10-14 21:14:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:26,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 21:14:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:27,059 INFO L225 Difference]: With dead ends: 27962 [2020-10-14 21:14:27,060 INFO L226 Difference]: Without dead ends: 16928 [2020-10-14 21:14:27,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:14:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16928 states. [2020-10-14 21:14:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16928 to 16719. [2020-10-14 21:14:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16719 states. [2020-10-14 21:14:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16719 states to 16719 states and 22713 transitions. [2020-10-14 21:14:27,590 INFO L78 Accepts]: Start accepts. Automaton has 16719 states and 22713 transitions. Word has length 126 [2020-10-14 21:14:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:27,591 INFO L479 AbstractCegarLoop]: Abstraction has 16719 states and 22713 transitions. [2020-10-14 21:14:27,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 16719 states and 22713 transitions. [2020-10-14 21:14:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 21:14:27,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:27,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:14:27,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:14:27,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1329124056, now seen corresponding path program 1 times [2020-10-14 21:14:27,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:27,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106749362] [2020-10-14 21:14:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:29,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:29,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 21:14:29,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:29,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-10-14 21:14:29,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:29,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:14:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:14:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:29,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:14:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:29,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:29,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:29,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:29,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:14:29,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:29,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:14:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:29,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:14:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:29,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:14:29,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:14:29,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:29,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:14:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:14:29,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106749362] [2020-10-14 21:14:29,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:29,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:14:29,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448356745] [2020-10-14 21:14:29,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:29,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:29,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:29,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:29,729 INFO L87 Difference]: Start difference. First operand 16719 states and 22713 transitions. Second operand 7 states. [2020-10-14 21:14:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:44,387 INFO L93 Difference]: Finished difference Result 27363 states and 38165 transitions. [2020-10-14 21:14:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:44,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-14 21:14:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:44,434 INFO L225 Difference]: With dead ends: 27363 [2020-10-14 21:14:44,434 INFO L226 Difference]: Without dead ends: 9873 [2020-10-14 21:14:44,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:14:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2020-10-14 21:14:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 9560. [2020-10-14 21:14:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9560 states. [2020-10-14 21:14:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9560 states to 9560 states and 11957 transitions. [2020-10-14 21:14:44,663 INFO L78 Accepts]: Start accepts. Automaton has 9560 states and 11957 transitions. Word has length 201 [2020-10-14 21:14:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:44,663 INFO L479 AbstractCegarLoop]: Abstraction has 9560 states and 11957 transitions. [2020-10-14 21:14:44,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:44,663 INFO L276 IsEmpty]: Start isEmpty. Operand 9560 states and 11957 transitions. [2020-10-14 21:14:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 21:14:44,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:44,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:14:44,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:14:44,667 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:44,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:44,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1424436821, now seen corresponding path program 1 times [2020-10-14 21:14:44,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:44,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090125898] [2020-10-14 21:14:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:44,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:44,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:46,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 21:14:46,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1704 [2020-10-14 21:14:46,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:46,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 21:14:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:46,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:46,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:14:46,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:46,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:47,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:47,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:14:47,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:47,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-14 21:14:47,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:47,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:14:47,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:48,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090125898] [2020-10-14 21:14:48,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:48,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:48,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144643138] [2020-10-14 21:14:48,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:48,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:48,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:48,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:48,048 INFO L87 Difference]: Start difference. First operand 9560 states and 11957 transitions. Second operand 7 states. [2020-10-14 21:15:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:02,248 INFO L93 Difference]: Finished difference Result 22689 states and 28389 transitions. [2020-10-14 21:15:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:15:02,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-14 21:15:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:02,306 INFO L225 Difference]: With dead ends: 22689 [2020-10-14 21:15:02,306 INFO L226 Difference]: Without dead ends: 13108 [2020-10-14 21:15:02,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:15:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13108 states. [2020-10-14 21:15:02,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13108 to 12802. [2020-10-14 21:15:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12802 states. [2020-10-14 21:15:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12802 states to 12802 states and 15435 transitions. [2020-10-14 21:15:02,585 INFO L78 Accepts]: Start accepts. Automaton has 12802 states and 15435 transitions. Word has length 225 [2020-10-14 21:15:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:02,586 INFO L479 AbstractCegarLoop]: Abstraction has 12802 states and 15435 transitions. [2020-10-14 21:15:02,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12802 states and 15435 transitions. [2020-10-14 21:15:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 21:15:02,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:02,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:02,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:15:02,590 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:02,591 INFO L82 PathProgramCache]: Analyzing trace with hash 132538769, now seen corresponding path program 1 times [2020-10-14 21:15:02,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:02,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167034947] [2020-10-14 21:15:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 21:15:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-14 21:15:04,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:15:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:15:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:04,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:15:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:15:04,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 21:15:04,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:15:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:15:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 21:15:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:15:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:15:04,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167034947] [2020-10-14 21:15:04,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:04,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:04,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094696978] [2020-10-14 21:15:04,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:04,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:04,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:04,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:04,821 INFO L87 Difference]: Start difference. First operand 12802 states and 15435 transitions. Second operand 7 states. [2020-10-14 21:15:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:22,398 INFO L93 Difference]: Finished difference Result 33124 states and 41915 transitions. [2020-10-14 21:15:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:22,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-14 21:15:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:22,465 INFO L225 Difference]: With dead ends: 33124 [2020-10-14 21:15:22,465 INFO L226 Difference]: Without dead ends: 21095 [2020-10-14 21:15:22,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21095 states. [2020-10-14 21:15:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21095 to 20110. [2020-10-14 21:15:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20110 states. [2020-10-14 21:15:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20110 states to 20110 states and 25399 transitions. [2020-10-14 21:15:22,851 INFO L78 Accepts]: Start accepts. Automaton has 20110 states and 25399 transitions. Word has length 246 [2020-10-14 21:15:22,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:22,852 INFO L479 AbstractCegarLoop]: Abstraction has 20110 states and 25399 transitions. [2020-10-14 21:15:22,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:22,852 INFO L276 IsEmpty]: Start isEmpty. Operand 20110 states and 25399 transitions. [2020-10-14 21:15:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 21:15:22,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:22,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:22,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:15:22,861 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:22,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1433218383, now seen corresponding path program 1 times [2020-10-14 21:15:22,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:22,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996742273] [2020-10-14 21:15:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:26,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:26,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 21:15:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:15:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3827 [2020-10-14 21:15:26,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:26,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:15:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:15:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:26,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:26,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:26,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:26,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:15:26,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:26,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:15:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 21:15:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:15:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:15:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:27,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:27,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:15:27,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:15:27,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:27,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:15:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:15:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:27,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:15:27,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:27,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:15:27,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:15:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 141 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:15:27,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996742273] [2020-10-14 21:15:27,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:27,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:27,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241191499] [2020-10-14 21:15:27,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:27,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:27,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:27,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:27,494 INFO L87 Difference]: Start difference. First operand 20110 states and 25399 transitions. Second operand 7 states. [2020-10-14 21:15:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:44,885 INFO L93 Difference]: Finished difference Result 55102 states and 73507 transitions. [2020-10-14 21:15:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:44,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-14 21:15:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:44,991 INFO L225 Difference]: With dead ends: 55102 [2020-10-14 21:15:44,991 INFO L226 Difference]: Without dead ends: 35765 [2020-10-14 21:15:45,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35765 states. [2020-10-14 21:15:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35765 to 34700. [2020-10-14 21:15:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34700 states. [2020-10-14 21:15:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34700 states to 34700 states and 44842 transitions. [2020-10-14 21:15:45,643 INFO L78 Accepts]: Start accepts. Automaton has 34700 states and 44842 transitions. Word has length 329 [2020-10-14 21:15:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:45,644 INFO L479 AbstractCegarLoop]: Abstraction has 34700 states and 44842 transitions. [2020-10-14 21:15:45,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 34700 states and 44842 transitions. [2020-10-14 21:15:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 21:15:45,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:45,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:45,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:15:45,652 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:45,652 INFO L82 PathProgramCache]: Analyzing trace with hash -529966999, now seen corresponding path program 1 times [2020-10-14 21:15:45,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:45,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563598873] [2020-10-14 21:15:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-14 21:15:50,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:15:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4736 [2020-10-14 21:15:50,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:15:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:15:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:50,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:50,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:15:50,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:15:50,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 21:15:50,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:15:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:15:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:15:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 21:15:51,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:15:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-14 21:15:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:51,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 21:15:51,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:15:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 141 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:15:51,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563598873] [2020-10-14 21:15:51,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:51,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:51,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930202232] [2020-10-14 21:15:51,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:51,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:51,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:51,288 INFO L87 Difference]: Start difference. First operand 34700 states and 44842 transitions. Second operand 7 states. [2020-10-14 21:16:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:11,196 INFO L93 Difference]: Finished difference Result 76359 states and 101294 transitions. [2020-10-14 21:16:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:16:11,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-14 21:16:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:11,307 INFO L225 Difference]: With dead ends: 76359 [2020-10-14 21:16:11,307 INFO L226 Difference]: Without dead ends: 42432 [2020-10-14 21:16:11,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42432 states. [2020-10-14 21:16:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42432 to 42154. [2020-10-14 21:16:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42154 states. [2020-10-14 21:16:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42154 states to 42154 states and 54669 transitions. [2020-10-14 21:16:12,159 INFO L78 Accepts]: Start accepts. Automaton has 42154 states and 54669 transitions. Word has length 333 [2020-10-14 21:16:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:12,159 INFO L479 AbstractCegarLoop]: Abstraction has 42154 states and 54669 transitions. [2020-10-14 21:16:12,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 42154 states and 54669 transitions. [2020-10-14 21:16:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 21:16:12,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:12,168 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:12,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:16:12,169 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:12,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1383217383, now seen corresponding path program 1 times [2020-10-14 21:16:12,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:12,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250489565] [2020-10-14 21:16:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:14,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 21:16:14,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:16:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-14 21:16:14,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:14,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:16:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 21:16:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:14,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:16:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:14,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:16:14,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:14,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:14,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:16:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 21:16:14,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:14,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:16:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:14,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-14 21:16:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:16:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 21:16:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:14,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:16:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 184 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 21:16:14,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250489565] [2020-10-14 21:16:14,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:14,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:16:14,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386254894] [2020-10-14 21:16:14,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:16:14,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:16:14,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:16:14,894 INFO L87 Difference]: Start difference. First operand 42154 states and 54669 transitions. Second operand 6 states. [2020-10-14 21:16:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:36,286 INFO L93 Difference]: Finished difference Result 93954 states and 121883 transitions. [2020-10-14 21:16:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:16:36,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 349 [2020-10-14 21:16:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:36,439 INFO L225 Difference]: With dead ends: 93954 [2020-10-14 21:16:36,439 INFO L226 Difference]: Without dead ends: 51768 [2020-10-14 21:16:36,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51768 states. [2020-10-14 21:16:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51768 to 50037. [2020-10-14 21:16:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50037 states. [2020-10-14 21:16:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50037 states to 50037 states and 64110 transitions. [2020-10-14 21:16:37,437 INFO L78 Accepts]: Start accepts. Automaton has 50037 states and 64110 transitions. Word has length 349 [2020-10-14 21:16:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:37,438 INFO L479 AbstractCegarLoop]: Abstraction has 50037 states and 64110 transitions. [2020-10-14 21:16:37,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:16:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 50037 states and 64110 transitions. [2020-10-14 21:16:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-14 21:16:37,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:37,445 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:37,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:16:37,445 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:37,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:37,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1830890576, now seen corresponding path program 1 times [2020-10-14 21:16:37,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:37,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961192131] [2020-10-14 21:16:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:42,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:42,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 21:16:42,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:16:42,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4762 [2020-10-14 21:16:42,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:42,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:16:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 21:16:42,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:42,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:42,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:42,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:42,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:16:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:42,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:42,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:42,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:16:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:42,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:42,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:42,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:42,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:16:42,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:16:42,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:42,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:16:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 21:16:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:42,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:42,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:16:42,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:16:42,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:42,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:16:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 240 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:16:43,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961192131] [2020-10-14 21:16:43,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:43,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:43,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727207600] [2020-10-14 21:16:43,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:43,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:43,048 INFO L87 Difference]: Start difference. First operand 50037 states and 64110 transitions. Second operand 7 states.