/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/Problem03_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:11:40,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:11:40,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:11:40,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:11:40,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:11:40,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:11:40,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:11:40,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:11:40,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:11:40,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:11:40,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:11:40,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:11:40,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:11:40,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:11:40,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:11:40,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:11:40,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:11:40,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:11:40,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:11:40,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:11:40,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:11:40,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:11:40,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:11:40,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:11:40,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:11:40,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:11:40,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:11:40,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:11:40,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:11:40,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:11:40,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:11:40,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:11:40,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:11:40,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:11:40,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:11:41,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:11:41,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:11:41,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:11:41,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:11:41,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:11:41,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:11:41,005 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 19:11:41,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:11:41,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:11:41,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:11:41,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:11:41,065 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:11:41,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:11:41,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:11:41,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:11:41,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:11:41,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:11:41,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:11:41,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:11:41,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:11:41,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:11:41,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:11:41,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:11:41,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:11:41,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:11:41,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:11:41,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:11:41,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:11:41,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:11:41,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:11:41,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:11:41,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:11:41,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:11:41,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:11:41,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:11:41,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:11:41,072 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 19:11:41,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:11:41,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:11:41,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:11:41,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:11:41,406 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:11:41,406 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2020-10-14 19:11:41,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb54ffd72/455cc2fb3f7a48f49afebd29427130b7/FLAGabd998585 [2020-10-14 19:11:42,129 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:11:42,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2020-10-14 19:11:42,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb54ffd72/455cc2fb3f7a48f49afebd29427130b7/FLAGabd998585 [2020-10-14 19:11:42,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb54ffd72/455cc2fb3f7a48f49afebd29427130b7 [2020-10-14 19:11:42,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:11:42,314 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:11:42,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:11:42,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:11:42,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:11:42,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:11:42" (1/1) ... [2020-10-14 19:11:42,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:42, skipping insertion in model container [2020-10-14 19:11:42,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:11:42" (1/1) ... [2020-10-14 19:11:42,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:11:42,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:11:43,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:11:43,227 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:11:43,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:11:43,623 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:11:43,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43 WrapperNode [2020-10-14 19:11:43,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:11:43,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:11:43,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:11:43,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:11:43,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (1/1) ... [2020-10-14 19:11:43,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (1/1) ... [2020-10-14 19:11:43,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (1/1) ... [2020-10-14 19:11:43,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (1/1) ... [2020-10-14 19:11:43,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (1/1) ... [2020-10-14 19:11:43,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (1/1) ... [2020-10-14 19:11:43,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (1/1) ... [2020-10-14 19:11:43,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:11:43,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:11:43,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:11:43,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:11:43,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (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 19:11:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:11:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:11:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:11:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:11:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:11:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:11:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:11:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:11:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:11:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:11:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:11:45,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:11:45,856 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:11:45,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:11:45 BoogieIcfgContainer [2020-10-14 19:11:45,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:11:45,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:11:45,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:11:45,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:11:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:11:42" (1/3) ... [2020-10-14 19:11:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:11:45, skipping insertion in model container [2020-10-14 19:11:45,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:43" (2/3) ... [2020-10-14 19:11:45,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:11:45, skipping insertion in model container [2020-10-14 19:11:45,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:11:45" (3/3) ... [2020-10-14 19:11:45,872 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label23.c [2020-10-14 19:11:45,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:11:45,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:11:45,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:11:45,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:11:45,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:11:45,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:11:45,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:11:45,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:11:45,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:11:45,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:11:45,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:11:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:11:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 19:11:45,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:45,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:45,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:45,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:45,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2031049480, now seen corresponding path program 1 times [2020-10-14 19:11:45,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:45,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899171141] [2020-10-14 19:11:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:46,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:51,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 19:11:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4582 [2020-10-14 19:11:51,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:51,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 19:11:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:11:51,393 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:51,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:51,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:51,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:11:51,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:51,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:51,544 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 19:11:51,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899171141] [2020-10-14 19:11:51,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:11:51,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:11:51,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839608689] [2020-10-14 19:11:51,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:11:51,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:51,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:11:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:11:51,574 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:11:51,774 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:11:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:54,792 INFO L93 Difference]: Finished difference Result 872 states and 1533 transitions. [2020-10-14 19:11:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:54,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-14 19:11:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:54,821 INFO L225 Difference]: With dead ends: 872 [2020-10-14 19:11:54,821 INFO L226 Difference]: Without dead ends: 483 [2020-10-14 19:11:54,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-14 19:11:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 465. [2020-10-14 19:11:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-14 19:11:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 750 transitions. [2020-10-14 19:11:54,918 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 750 transitions. Word has length 177 [2020-10-14 19:11:54,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:54,920 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 750 transitions. [2020-10-14 19:11:54,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:11:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 750 transitions. [2020-10-14 19:11:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 19:11:54,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:54,928 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:11:54,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:11:54,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:54,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1152351313, now seen corresponding path program 1 times [2020-10-14 19:11:54,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:54,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532880148] [2020-10-14 19:11:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:56,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:58,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:58,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 19:11:58,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3057 [2020-10-14 19:11:58,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:58,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:11:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:11:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:58,349 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:58,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:58,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:58,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:11:58,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:58,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:58,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:58,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:11:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:58,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:11:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:58,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:11:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:58,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532880148] [2020-10-14 19:11:58,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:58,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:11:58,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391695823] [2020-10-14 19:11:58,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:11:58,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:11:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:58,609 INFO L87 Difference]: Start difference. First operand 465 states and 750 transitions. Second operand 6 states. [2020-10-14 19:11:58,760 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:59,150 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:03,002 INFO L93 Difference]: Finished difference Result 1803 states and 2972 transitions. [2020-10-14 19:12:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:12:03,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-10-14 19:12:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:03,013 INFO L225 Difference]: With dead ends: 1803 [2020-10-14 19:12:03,013 INFO L226 Difference]: Without dead ends: 1344 [2020-10-14 19:12:03,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2020-10-14 19:12:03,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1333. [2020-10-14 19:12:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-14 19:12:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1949 transitions. [2020-10-14 19:12:03,088 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1949 transitions. Word has length 187 [2020-10-14 19:12:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:03,089 INFO L479 AbstractCegarLoop]: Abstraction has 1333 states and 1949 transitions. [2020-10-14 19:12:03,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:12:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1949 transitions. [2020-10-14 19:12:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 19:12:03,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:03,098 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:12:03,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:12:03,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:03,100 INFO L82 PathProgramCache]: Analyzing trace with hash -909805824, now seen corresponding path program 1 times [2020-10-14 19:12:03,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:03,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466359575] [2020-10-14 19:12:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:04,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:04,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 19:12:04,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:04,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-14 19:12:04,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:04,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:04,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:12:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:12:04,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:04,397 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:04,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:04,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:04,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:12:04,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:04,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:04,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:04,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:04,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:04,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:12:04,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:04,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:12:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:12:04,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466359575] [2020-10-14 19:12:04,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:12:04,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 19:12:04,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575492194] [2020-10-14 19:12:04,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:04,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:04,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:04,681 INFO L87 Difference]: Start difference. First operand 1333 states and 1949 transitions. Second operand 8 states. [2020-10-14 19:12:04,836 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:05,109 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:12:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:07,705 INFO L93 Difference]: Finished difference Result 3966 states and 5911 transitions. [2020-10-14 19:12:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:12:07,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-10-14 19:12:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:07,730 INFO L225 Difference]: With dead ends: 3966 [2020-10-14 19:12:07,730 INFO L226 Difference]: Without dead ends: 2639 [2020-10-14 19:12:07,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:12:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-10-14 19:12:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2617. [2020-10-14 19:12:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2617 states. [2020-10-14 19:12:07,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3489 transitions. [2020-10-14 19:12:07,872 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3489 transitions. Word has length 191 [2020-10-14 19:12:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:07,872 INFO L479 AbstractCegarLoop]: Abstraction has 2617 states and 3489 transitions. [2020-10-14 19:12:07,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:12:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3489 transitions. [2020-10-14 19:12:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 19:12:07,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:07,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:12:07,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:12:07,883 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:07,883 INFO L82 PathProgramCache]: Analyzing trace with hash 642714188, now seen corresponding path program 1 times [2020-10-14 19:12:07,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:07,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749876406] [2020-10-14 19:12:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:08,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:12,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 19:12:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 19:12:12,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:12,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 19:12:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 19:12:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:13,244 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:12:13,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:13,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:13,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:12:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:13,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:13,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:13,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:13,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:12:13,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:13,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:12:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:12:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:12:13,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749876406] [2020-10-14 19:12:13,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:13,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:13,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550585201] [2020-10-14 19:12:13,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:13,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:13,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:13,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:13,494 INFO L87 Difference]: Start difference. First operand 2617 states and 3489 transitions. Second operand 5 states. [2020-10-14 19:12:13,639 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:16,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:16,763 INFO L93 Difference]: Finished difference Result 7391 states and 10053 transitions. [2020-10-14 19:12:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:16,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 19:12:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:16,792 INFO L225 Difference]: With dead ends: 7391 [2020-10-14 19:12:16,792 INFO L226 Difference]: Without dead ends: 4780 [2020-10-14 19:12:16,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2020-10-14 19:12:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 4742. [2020-10-14 19:12:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4742 states. [2020-10-14 19:12:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 6429 transitions. [2020-10-14 19:12:16,961 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 6429 transitions. Word has length 199 [2020-10-14 19:12:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:16,963 INFO L479 AbstractCegarLoop]: Abstraction has 4742 states and 6429 transitions. [2020-10-14 19:12:16,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 6429 transitions. [2020-10-14 19:12:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 19:12:16,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:16,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:12:16,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:12:16,979 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:16,980 INFO L82 PathProgramCache]: Analyzing trace with hash 897128468, now seen corresponding path program 1 times [2020-10-14 19:12:16,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:16,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67041730] [2020-10-14 19:12:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:20,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 19:12:20,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3137 [2020-10-14 19:12:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:20,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:12:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:12:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:20,348 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:20,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:20,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:20,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:20,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:12:20,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:20,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:20,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:20,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:12:20,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:20,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:20,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:12:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:12:20,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:20,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:20,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 19:12:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:20,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:12:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:12:20,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67041730] [2020-10-14 19:12:20,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:20,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:20,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688888757] [2020-10-14 19:12:20,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:12:20,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:12:20,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:12:20,686 INFO L87 Difference]: Start difference. First operand 4742 states and 6429 transitions. Second operand 7 states. [2020-10-14 19:12:20,846 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:21,572 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:12:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:23,838 INFO L93 Difference]: Finished difference Result 14191 states and 20413 transitions. [2020-10-14 19:12:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:12:23,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 19:12:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:23,887 INFO L225 Difference]: With dead ends: 14191 [2020-10-14 19:12:23,888 INFO L226 Difference]: Without dead ends: 9455 [2020-10-14 19:12:23,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:12:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9455 states. [2020-10-14 19:12:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9455 to 9300. [2020-10-14 19:12:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9300 states. [2020-10-14 19:12:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 12583 transitions. [2020-10-14 19:12:24,300 INFO L78 Accepts]: Start accepts. Automaton has 9300 states and 12583 transitions. Word has length 203 [2020-10-14 19:12:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:24,301 INFO L479 AbstractCegarLoop]: Abstraction has 9300 states and 12583 transitions. [2020-10-14 19:12:24,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:12:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9300 states and 12583 transitions. [2020-10-14 19:12:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 19:12:24,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:24,327 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:24,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:12:24,328 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:24,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1568023809, now seen corresponding path program 1 times [2020-10-14 19:12:24,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:24,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708605929] [2020-10-14 19:12:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:25,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 19:12:25,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1445 [2020-10-14 19:12:25,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:25,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:12:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:12:25,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,010 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:26,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:26,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:12:26,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:26,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:12:26,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 19:12:26,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:12:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:12:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:26,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:12:26,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:12:26,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:26,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:12:26,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:12:26,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708605929] [2020-10-14 19:12:26,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:26,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:26,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812844924] [2020-10-14 19:12:26,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:26,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:26,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:26,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:26,561 INFO L87 Difference]: Start difference. First operand 9300 states and 12583 transitions. Second operand 8 states. [2020-10-14 19:12:26,737 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:28,126 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 19:12:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:30,513 INFO L93 Difference]: Finished difference Result 27907 states and 41897 transitions. [2020-10-14 19:12:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:12:30,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-10-14 19:12:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:30,638 INFO L225 Difference]: With dead ends: 27907 [2020-10-14 19:12:30,638 INFO L226 Difference]: Without dead ends: 18820 [2020-10-14 19:12:30,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:12:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18820 states. [2020-10-14 19:12:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18820 to 16770. [2020-10-14 19:12:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16770 states. [2020-10-14 19:12:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16770 states to 16770 states and 23374 transitions. [2020-10-14 19:12:31,476 INFO L78 Accepts]: Start accepts. Automaton has 16770 states and 23374 transitions. Word has length 214 [2020-10-14 19:12:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:31,477 INFO L479 AbstractCegarLoop]: Abstraction has 16770 states and 23374 transitions. [2020-10-14 19:12:31,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:12:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 16770 states and 23374 transitions. [2020-10-14 19:12:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 19:12:31,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:31,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:12:31,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:12:31,535 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:31,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:31,536 INFO L82 PathProgramCache]: Analyzing trace with hash -139413624, now seen corresponding path program 1 times [2020-10-14 19:12:31,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:31,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123906176] [2020-10-14 19:12:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:36,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 19:12:36,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 19:12:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:36,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:12:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:12:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:36,789 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:36,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:36,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:12:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:36,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:36,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:12:36,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 19:12:36,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:36,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:12:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:12:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:36,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:12:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:36,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:12:36,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:36,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:12:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 19:12:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:37,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:37,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:37,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:37,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 19:12:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 19:12:37,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123906176] [2020-10-14 19:12:37,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:37,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:12:37,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499003628] [2020-10-14 19:12:37,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:37,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:37,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:37,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:37,064 INFO L87 Difference]: Start difference. First operand 16770 states and 23374 transitions. Second operand 8 states. [2020-10-14 19:12:37,218 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:38,003 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:42,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:42,112 INFO L93 Difference]: Finished difference Result 61310 states and 89631 transitions. [2020-10-14 19:12:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:12:42,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2020-10-14 19:12:42,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:42,285 INFO L225 Difference]: With dead ends: 61310 [2020-10-14 19:12:42,286 INFO L226 Difference]: Without dead ends: 44546 [2020-10-14 19:12:42,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:12:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44546 states. [2020-10-14 19:12:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44546 to 44202. [2020-10-14 19:12:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44202 states. [2020-10-14 19:12:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44202 states to 44202 states and 63016 transitions. [2020-10-14 19:12:43,527 INFO L78 Accepts]: Start accepts. Automaton has 44202 states and 63016 transitions. Word has length 221 [2020-10-14 19:12:43,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:43,527 INFO L479 AbstractCegarLoop]: Abstraction has 44202 states and 63016 transitions. [2020-10-14 19:12:43,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:12:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 44202 states and 63016 transitions. [2020-10-14 19:12:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 19:12:43,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:43,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:12:43,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:12:43,632 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:43,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:43,633 INFO L82 PathProgramCache]: Analyzing trace with hash -14829201, now seen corresponding path program 1 times [2020-10-14 19:12:43,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:43,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991466066] [2020-10-14 19:12:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:48,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:48,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 19:12:48,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 19:12:48,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:48,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:12:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:12:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 19:12:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:48,889 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:48,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:48,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:48,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:48,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:48,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:48,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:12:48,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:48,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:48,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:12:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:49,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:12:49,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:49,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:49,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:12:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 19:12:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:12:49,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:12:49,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:12:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 47 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 19:12:49,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991466066] [2020-10-14 19:12:49,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:49,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:12:49,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068489416] [2020-10-14 19:12:49,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:12:49,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:49,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:12:49,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:49,124 INFO L87 Difference]: Start difference. First operand 44202 states and 63016 transitions. Second operand 6 states. [2020-10-14 19:12:49,411 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:52,276 INFO L93 Difference]: Finished difference Result 104971 states and 156287 transitions. [2020-10-14 19:12:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:12:52,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2020-10-14 19:12:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:52,526 INFO L225 Difference]: With dead ends: 104971 [2020-10-14 19:12:52,527 INFO L226 Difference]: Without dead ends: 60982 [2020-10-14 19:12:52,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:52,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60982 states. [2020-10-14 19:12:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60982 to 60559. [2020-10-14 19:12:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60559 states. [2020-10-14 19:12:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60559 states to 60559 states and 89167 transitions. [2020-10-14 19:12:54,071 INFO L78 Accepts]: Start accepts. Automaton has 60559 states and 89167 transitions. Word has length 224 [2020-10-14 19:12:54,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:54,072 INFO L479 AbstractCegarLoop]: Abstraction has 60559 states and 89167 transitions. [2020-10-14 19:12:54,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:12:54,073 INFO L276 IsEmpty]: Start isEmpty. Operand 60559 states and 89167 transitions. [2020-10-14 19:12:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 19:12:54,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:54,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:12:54,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:12:54,172 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:54,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:54,173 INFO L82 PathProgramCache]: Analyzing trace with hash 133984308, now seen corresponding path program 1 times [2020-10-14 19:12:54,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:54,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621470352] [2020-10-14 19:12:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:57,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:57,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 19:12:57,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:12:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3503 [2020-10-14 19:12:57,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:57,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:12:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 19:12:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:58,069 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:58,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:58,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:58,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:12:58,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:58,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:12:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:58,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:58,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:12:58,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:58,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:12:58,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:58,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:12:58,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 19:12:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:58,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:58,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:12:58,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:12:58,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:58,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:12:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 19:12:58,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621470352] [2020-10-14 19:12:58,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:58,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:12:58,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921409972] [2020-10-14 19:12:58,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:12:58,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:58,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:12:58,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:12:58,538 INFO L87 Difference]: Start difference. First operand 60559 states and 89167 transitions. Second operand 9 states. [2020-10-14 19:12:58,697 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:00,854 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:13:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:04,195 INFO L93 Difference]: Finished difference Result 154724 states and 236683 transitions. [2020-10-14 19:13:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:13:04,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2020-10-14 19:13:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:04,559 INFO L225 Difference]: With dead ends: 154724 [2020-10-14 19:13:04,559 INFO L226 Difference]: Without dead ends: 94591 [2020-10-14 19:13:04,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:13:04,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94591 states. [2020-10-14 19:13:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94591 to 93041. [2020-10-14 19:13:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93041 states. [2020-10-14 19:13:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93041 states to 93041 states and 136391 transitions. [2020-10-14 19:13:07,217 INFO L78 Accepts]: Start accepts. Automaton has 93041 states and 136391 transitions. Word has length 227 [2020-10-14 19:13:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:07,218 INFO L479 AbstractCegarLoop]: Abstraction has 93041 states and 136391 transitions. [2020-10-14 19:13:07,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:13:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 93041 states and 136391 transitions. [2020-10-14 19:13:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 19:13:07,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:07,312 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:07,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:13:07,312 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:07,313 INFO L82 PathProgramCache]: Analyzing trace with hash -945312002, now seen corresponding path program 1 times [2020-10-14 19:13:07,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:07,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700655233] [2020-10-14 19:13:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:09,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:09,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 19:13:09,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:09,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-10-14 19:13:09,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:09,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:13:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 19:13:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 19:13:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:09,653 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:09,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:09,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:09,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:13:09,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:09,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:09,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:09,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:13:09,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:13:09,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:09,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:13:09,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:13:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:13:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 19:13:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:09,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:13:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:13:09,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700655233] [2020-10-14 19:13:09,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:09,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:13:09,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683699127] [2020-10-14 19:13:09,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:13:09,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:09,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:13:09,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:09,940 INFO L87 Difference]: Start difference. First operand 93041 states and 136391 transitions. Second operand 6 states. [2020-10-14 19:13:10,207 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:13,820 INFO L93 Difference]: Finished difference Result 219799 states and 334529 transitions. [2020-10-14 19:13:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:13:13,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2020-10-14 19:13:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:14,289 INFO L225 Difference]: With dead ends: 219799 [2020-10-14 19:13:14,289 INFO L226 Difference]: Without dead ends: 127184 [2020-10-14 19:13:14,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127184 states. [2020-10-14 19:13:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127184 to 123209. [2020-10-14 19:13:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123209 states. [2020-10-14 19:13:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123209 states to 123209 states and 171230 transitions. [2020-10-14 19:13:20,482 INFO L78 Accepts]: Start accepts. Automaton has 123209 states and 171230 transitions. Word has length 226 [2020-10-14 19:13:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:20,482 INFO L479 AbstractCegarLoop]: Abstraction has 123209 states and 171230 transitions. [2020-10-14 19:13:20,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:13:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 123209 states and 171230 transitions. [2020-10-14 19:13:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 19:13:20,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:20,549 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:20,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:13:20,550 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:20,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2137655350, now seen corresponding path program 1 times [2020-10-14 19:13:20,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:20,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359473488] [2020-10-14 19:13:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:21,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 19:13:21,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:21,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-14 19:13:21,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:21,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 19:13:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 19:13:21,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:21,961 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:21,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:21,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:13:21,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:21,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:21,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:22,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:22,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:13:22,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:13:22,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:22,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:22,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:13:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:22,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:22,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:13:22,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:22,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 19:13:22,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:22,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:13:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 19:13:22,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359473488] [2020-10-14 19:13:22,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:22,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:22,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031021339] [2020-10-14 19:13:22,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:22,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:22,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:22,176 INFO L87 Difference]: Start difference. First operand 123209 states and 171230 transitions. Second operand 5 states. [2020-10-14 19:13:22,435 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:26,364 INFO L93 Difference]: Finished difference Result 309797 states and 435214 transitions. [2020-10-14 19:13:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:26,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-14 19:13:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:26,864 INFO L225 Difference]: With dead ends: 309797 [2020-10-14 19:13:26,864 INFO L226 Difference]: Without dead ends: 187014 [2020-10-14 19:13:27,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187014 states. [2020-10-14 19:13:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187014 to 166319. [2020-10-14 19:13:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166319 states. [2020-10-14 19:13:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166319 states to 166319 states and 222829 transitions. [2020-10-14 19:13:30,567 INFO L78 Accepts]: Start accepts. Automaton has 166319 states and 222829 transitions. Word has length 232 [2020-10-14 19:13:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:30,568 INFO L479 AbstractCegarLoop]: Abstraction has 166319 states and 222829 transitions. [2020-10-14 19:13:30,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 166319 states and 222829 transitions. [2020-10-14 19:13:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 19:13:30,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:30,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:13:30,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:13:30,630 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:30,631 INFO L82 PathProgramCache]: Analyzing trace with hash 941144266, now seen corresponding path program 1 times [2020-10-14 19:13:30,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:30,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145136963] [2020-10-14 19:13:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:35,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:35,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 19:13:35,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 19:13:35,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:35,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:13:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:13:35,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 19:13:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:35,866 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:35,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:35,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:35,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:35,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:13:35,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:35,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:35,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:35,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:13:35,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:13:35,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:35,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:35,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:35,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:35,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:13:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:13:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:13:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 19:13:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:36,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:13:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:13:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:13:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:36,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:36,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:13:36,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:13:36,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:36,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:13:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:13:36,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145136963] [2020-10-14 19:13:36,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:36,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:13:36,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437504395] [2020-10-14 19:13:36,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:13:36,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:36,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:13:36,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:13:36,227 INFO L87 Difference]: Start difference. First operand 166319 states and 222829 transitions. Second operand 10 states. [2020-10-14 19:13:36,387 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:36,841 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2020-10-14 19:13:37,156 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:13:38,122 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:13:39,605 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-14 19:13:42,078 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:44,495 INFO L93 Difference]: Finished difference Result 341579 states and 500733 transitions. [2020-10-14 19:13:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 19:13:44,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 234 [2020-10-14 19:13:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:45,058 INFO L225 Difference]: With dead ends: 341579 [2020-10-14 19:13:45,059 INFO L226 Difference]: Without dead ends: 176116 [2020-10-14 19:13:45,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2020-10-14 19:13:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176116 states. [2020-10-14 19:13:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176116 to 169235. [2020-10-14 19:13:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169235 states. [2020-10-14 19:13:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169235 states to 169235 states and 218792 transitions. [2020-10-14 19:13:48,844 INFO L78 Accepts]: Start accepts. Automaton has 169235 states and 218792 transitions. Word has length 234 [2020-10-14 19:13:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:48,845 INFO L479 AbstractCegarLoop]: Abstraction has 169235 states and 218792 transitions. [2020-10-14 19:13:48,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:13:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 169235 states and 218792 transitions. [2020-10-14 19:13:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 19:13:48,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:48,885 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:48,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:13:48,885 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:48,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash -832485520, now seen corresponding path program 1 times [2020-10-14 19:13:48,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:48,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045685983] [2020-10-14 19:13:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:49,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 19:13:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 19:13:53,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:53,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 19:13:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 19:13:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,156 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:54,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:13:54,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:13:54,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:13:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:13:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:13:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:13:54,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:13:54,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 19:13:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:13:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:13:54,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:13:54,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 19:13:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:54,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 63 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:13:54,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045685983] [2020-10-14 19:13:54,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:54,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:13:54,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701296704] [2020-10-14 19:13:54,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:13:54,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:54,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:13:54,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:13:54,480 INFO L87 Difference]: Start difference. First operand 169235 states and 218792 transitions. Second operand 10 states. [2020-10-14 19:13:54,629 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:55,009 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2020-10-14 19:13:55,462 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2020-10-14 19:13:59,199 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:14:01,704 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:14:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:09,930 INFO L93 Difference]: Finished difference Result 682623 states and 989681 transitions. [2020-10-14 19:14:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 19:14:09,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 237 [2020-10-14 19:14:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:17,276 INFO L225 Difference]: With dead ends: 682623 [2020-10-14 19:14:17,276 INFO L226 Difference]: Without dead ends: 513605 [2020-10-14 19:14:17,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2020-10-14 19:14:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513605 states. [2020-10-14 19:14:34,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513605 to 502406. [2020-10-14 19:14:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502406 states. [2020-10-14 19:14:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502406 states to 502406 states and 697434 transitions. [2020-10-14 19:14:35,641 INFO L78 Accepts]: Start accepts. Automaton has 502406 states and 697434 transitions. Word has length 237 [2020-10-14 19:14:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:35,641 INFO L479 AbstractCegarLoop]: Abstraction has 502406 states and 697434 transitions. [2020-10-14 19:14:35,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:14:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 502406 states and 697434 transitions. [2020-10-14 19:14:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 19:14:35,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:35,773 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:35,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:14:35,773 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:35,774 INFO L82 PathProgramCache]: Analyzing trace with hash 528420401, now seen corresponding path program 1 times [2020-10-14 19:14:35,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:35,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575603322] [2020-10-14 19:14:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:42,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:42,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 19:14:42,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:42,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6964 [2020-10-14 19:14:42,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:42,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:42,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:42,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:14:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 19:14:42,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:42,955 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:42,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:42,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:42,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:42,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:14:42,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:42,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:42,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:42,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:42,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:43,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:43,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:14:43,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:14:43,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:43,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:14:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:43,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:14:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:43,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 19:14:43,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 19:14:43,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:43,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 19:14:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 19:14:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:43,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:43,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:14:43,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575603322] [2020-10-14 19:14:43,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:43,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:14:43,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500010294] [2020-10-14 19:14:43,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:43,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:43,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:43,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:43,396 INFO L87 Difference]: Start difference. First operand 502406 states and 697434 transitions. Second operand 7 states. [2020-10-14 19:14:43,548 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:14:43,867 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 131