/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/Problem11_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:55:54,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:55:54,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:55:54,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:55:54,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:55:54,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:55:54,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:55:54,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:55:54,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:55:54,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:55:54,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:55:54,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:55:54,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:55:54,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:55:54,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:55:54,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:55:54,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:55:54,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:55:54,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:55:54,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:55:54,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:55:54,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:55:54,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:55:54,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:55:54,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:55:54,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:55:54,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:55:54,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:55:54,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:55:54,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:55:54,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:55:54,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:55:54,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:55:54,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:55:54,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:55:54,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:55:54,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:55:54,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:55:54,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:55:54,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:55:54,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:55:54,722 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 20:55:54,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:55:54,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:55:54,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:55:54,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:55:54,767 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:55:54,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:55:54,768 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:55:54,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:55:54,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:55:54,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:55:54,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:55:54,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:55:54,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:55:54,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:55:54,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:55:54,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:55:54,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:55:54,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:55:54,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:55:54,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:55:54,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:55:54,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:55:54,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:55:54,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:55:54,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:55:54,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:55:54,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:55:54,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:55:54,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:55:54,773 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 20:55:55,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:55:55,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:55:55,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:55:55,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:55:55,122 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:55:55,123 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2020-10-14 20:55:55,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a784eaf6e/777739c5097f4bd3b30a0215f383d178/FLAG16088fe72 [2020-10-14 20:55:55,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:55:55,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2020-10-14 20:55:55,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a784eaf6e/777739c5097f4bd3b30a0215f383d178/FLAG16088fe72 [2020-10-14 20:55:56,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a784eaf6e/777739c5097f4bd3b30a0215f383d178 [2020-10-14 20:55:56,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:55:56,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:55:56,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:55:56,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:55:56,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:55:56,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:56" (1/1) ... [2020-10-14 20:55:56,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:56, skipping insertion in model container [2020-10-14 20:55:56,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:56" (1/1) ... [2020-10-14 20:55:56,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:55:56,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:55:56,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:55:56,927 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:55:57,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:55:57,274 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:55:57,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57 WrapperNode [2020-10-14 20:55:57,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:55:57,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:55:57,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:55:57,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:55:57,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (1/1) ... [2020-10-14 20:55:57,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (1/1) ... [2020-10-14 20:55:57,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (1/1) ... [2020-10-14 20:55:57,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (1/1) ... [2020-10-14 20:55:57,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (1/1) ... [2020-10-14 20:55:57,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (1/1) ... [2020-10-14 20:55:57,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (1/1) ... [2020-10-14 20:55:57,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:55:57,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:55:57,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:55:57,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:55:57,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (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 20:55:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:55:57,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:55:57,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:55:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:55:57,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:55:57,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:55:57,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:55:57,565 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:55:57,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:55:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:55:57,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:55:59,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:55:59,408 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:55:59,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:59 BoogieIcfgContainer [2020-10-14 20:55:59,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:55:59,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:55:59,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:55:59,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:55:59,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:55:56" (1/3) ... [2020-10-14 20:55:59,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6c5c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:59, skipping insertion in model container [2020-10-14 20:55:59,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:57" (2/3) ... [2020-10-14 20:55:59,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6c5c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:59, skipping insertion in model container [2020-10-14 20:55:59,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:59" (3/3) ... [2020-10-14 20:55:59,423 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label13.c [2020-10-14 20:55:59,434 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:55:59,442 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:55:59,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:55:59,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:55:59,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:55:59,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:55:59,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:55:59,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:55:59,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:55:59,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:55:59,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:55:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 20:55:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 20:55:59,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:59,520 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] [2020-10-14 20:55:59,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1992146438, now seen corresponding path program 1 times [2020-10-14 20:55:59,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:59,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40287689] [2020-10-14 20:55:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:00,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:00,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 20:56:00,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-14 20:56:00,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:00,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:56:00,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:56:00,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 20:56:00,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:56:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:00,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:00,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:00,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:00,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 20:56:00,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:00,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:00,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:56:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:00,362 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 20:56:00,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40287689] [2020-10-14 20:56:00,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:56:00,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 20:56:00,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362147589] [2020-10-14 20:56:00,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:56:00,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:00,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:56:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:56:00,390 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2020-10-14 20:56:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:03,808 INFO L93 Difference]: Finished difference Result 999 states and 1796 transitions. [2020-10-14 20:56:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:56:03,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 20:56:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:03,832 INFO L225 Difference]: With dead ends: 999 [2020-10-14 20:56:03,832 INFO L226 Difference]: Without dead ends: 639 [2020-10-14 20:56:03,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-14 20:56:03,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 621. [2020-10-14 20:56:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-14 20:56:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 903 transitions. [2020-10-14 20:56:03,936 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 903 transitions. Word has length 39 [2020-10-14 20:56:03,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:03,937 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 903 transitions. [2020-10-14 20:56:03,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:56:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 903 transitions. [2020-10-14 20:56:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 20:56:03,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:03,943 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 20:56:03,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:56:03,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:03,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1574284182, now seen corresponding path program 1 times [2020-10-14 20:56:03,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:03,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075437123] [2020-10-14 20:56:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:05,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:05,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 20:56:05,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-14 20:56:05,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:05,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:56:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:56:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:56:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:05,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:05,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:05,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:05,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:56:05,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:05,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:56:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:05,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:05,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:05,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 20:56:05,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 20:56:05,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:05,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 20:56:05,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:56:05,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075437123] [2020-10-14 20:56:05,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:56:05,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:56:05,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858638472] [2020-10-14 20:56:05,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:05,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:05,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:05,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:05,493 INFO L87 Difference]: Start difference. First operand 621 states and 903 transitions. Second operand 7 states. [2020-10-14 20:56:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:07,893 INFO L93 Difference]: Finished difference Result 1871 states and 2808 transitions. [2020-10-14 20:56:07,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:07,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-14 20:56:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:07,903 INFO L225 Difference]: With dead ends: 1871 [2020-10-14 20:56:07,904 INFO L226 Difference]: Without dead ends: 1256 [2020-10-14 20:56:07,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-10-14 20:56:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1224. [2020-10-14 20:56:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-10-14 20:56:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1642 transitions. [2020-10-14 20:56:07,988 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1642 transitions. Word has length 109 [2020-10-14 20:56:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:07,989 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1642 transitions. [2020-10-14 20:56:07,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1642 transitions. [2020-10-14 20:56:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 20:56:07,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:07,997 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 20:56:07,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:56:07,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2108082422, now seen corresponding path program 1 times [2020-10-14 20:56:07,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:07,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302578821] [2020-10-14 20:56:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:09,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 20:56:09,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:56:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-14 20:56:09,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:09,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:56:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:56:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 20:56:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:56:09,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:09,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:09,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:09,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 20:56:09,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:09,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:56:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:56:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:09,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:09,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:56:09,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:09,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 20:56:09,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:09,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:56:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 20:56:09,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302578821] [2020-10-14 20:56:09,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:09,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:56:09,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215245270] [2020-10-14 20:56:09,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:56:09,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:09,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:56:09,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:09,787 INFO L87 Difference]: Start difference. First operand 1224 states and 1642 transitions. Second operand 6 states. [2020-10-14 20:56:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:12,372 INFO L93 Difference]: Finished difference Result 3447 states and 4768 transitions. [2020-10-14 20:56:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:56:12,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 20:56:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:12,389 INFO L225 Difference]: With dead ends: 3447 [2020-10-14 20:56:12,389 INFO L226 Difference]: Without dead ends: 2229 [2020-10-14 20:56:12,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:56:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2020-10-14 20:56:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2216. [2020-10-14 20:56:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-14 20:56:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 2858 transitions. [2020-10-14 20:56:12,461 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 2858 transitions. Word has length 119 [2020-10-14 20:56:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:12,462 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 2858 transitions. [2020-10-14 20:56:12,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:56:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 2858 transitions. [2020-10-14 20:56:12,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 20:56:12,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:12,466 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 20:56:12,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:56:12,466 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -56836462, now seen corresponding path program 1 times [2020-10-14 20:56:12,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:12,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074742245] [2020-10-14 20:56:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:12,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:12,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 20:56:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:12,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 20:56:12,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:12,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 20:56:12,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 20:56:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:12,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:12,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:12,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:12,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:12,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:12,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:13,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:13,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 20:56:13,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:13,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:13,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:56:13,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074742245] [2020-10-14 20:56:13,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:13,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:56:13,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629097014] [2020-10-14 20:56:13,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:56:13,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:13,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:56:13,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:56:13,323 INFO L87 Difference]: Start difference. First operand 2216 states and 2858 transitions. Second operand 5 states. [2020-10-14 20:56:15,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:15,381 INFO L93 Difference]: Finished difference Result 5020 states and 6667 transitions. [2020-10-14 20:56:15,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:56:15,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 20:56:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:15,401 INFO L225 Difference]: With dead ends: 5020 [2020-10-14 20:56:15,402 INFO L226 Difference]: Without dead ends: 2998 [2020-10-14 20:56:15,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-10-14 20:56:15,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2984. [2020-10-14 20:56:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2984 states. [2020-10-14 20:56:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3820 transitions. [2020-10-14 20:56:15,507 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3820 transitions. Word has length 170 [2020-10-14 20:56:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:15,509 INFO L479 AbstractCegarLoop]: Abstraction has 2984 states and 3820 transitions. [2020-10-14 20:56:15,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:56:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3820 transitions. [2020-10-14 20:56:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 20:56:15,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:15,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:15,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:56:15,515 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:15,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:15,515 INFO L82 PathProgramCache]: Analyzing trace with hash -918238524, now seen corresponding path program 1 times [2020-10-14 20:56:15,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:15,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757219843] [2020-10-14 20:56:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:17,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:17,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 20:56:17,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:56:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2294 [2020-10-14 20:56:17,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:17,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:56:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 20:56:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:17,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:17,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:17,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:17,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:56:17,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:17,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:17,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:18,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 20:56:18,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:18,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:56:18,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:56:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:18,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:18,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 20:56:18,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:18,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 20:56:18,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:18,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:18,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:56:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:18,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757219843] [2020-10-14 20:56:18,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:18,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:18,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426151087] [2020-10-14 20:56:18,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:18,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:18,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:18,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:18,487 INFO L87 Difference]: Start difference. First operand 2984 states and 3820 transitions. Second operand 7 states. [2020-10-14 20:56:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:21,379 INFO L93 Difference]: Finished difference Result 6299 states and 8596 transitions. [2020-10-14 20:56:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:21,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-14 20:56:21,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:21,407 INFO L225 Difference]: With dead ends: 6299 [2020-10-14 20:56:21,407 INFO L226 Difference]: Without dead ends: 3509 [2020-10-14 20:56:21,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2020-10-14 20:56:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3220. [2020-10-14 20:56:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2020-10-14 20:56:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4147 transitions. [2020-10-14 20:56:21,518 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4147 transitions. Word has length 229 [2020-10-14 20:56:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:21,518 INFO L479 AbstractCegarLoop]: Abstraction has 3220 states and 4147 transitions. [2020-10-14 20:56:21,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4147 transitions. [2020-10-14 20:56:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 20:56:21,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:21,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:21,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:56:21,524 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2014559928, now seen corresponding path program 1 times [2020-10-14 20:56:21,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:21,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661455786] [2020-10-14 20:56:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:22,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:22,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 20:56:22,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-14 20:56:22,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:22,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 20:56:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 20:56:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:22,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:22,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:22,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:22,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:22,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:22,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:22,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:22,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:56:22,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:22,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:22,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:56:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:22,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 20:56:22,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 20:56:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:22,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 20:56:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 20:56:22,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661455786] [2020-10-14 20:56:22,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:22,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:56:22,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208517682] [2020-10-14 20:56:22,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:56:22,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:22,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:56:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:56:22,930 INFO L87 Difference]: Start difference. First operand 3220 states and 4147 transitions. Second operand 5 states. [2020-10-14 20:56:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:25,249 INFO L93 Difference]: Finished difference Result 7232 states and 9506 transitions. [2020-10-14 20:56:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:56:25,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-14 20:56:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:25,270 INFO L225 Difference]: With dead ends: 7232 [2020-10-14 20:56:25,270 INFO L226 Difference]: Without dead ends: 4018 [2020-10-14 20:56:25,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2020-10-14 20:56:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3800. [2020-10-14 20:56:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3800 states. [2020-10-14 20:56:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 4914 transitions. [2020-10-14 20:56:25,383 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 4914 transitions. Word has length 239 [2020-10-14 20:56:25,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:25,384 INFO L479 AbstractCegarLoop]: Abstraction has 3800 states and 4914 transitions. [2020-10-14 20:56:25,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:56:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 4914 transitions. [2020-10-14 20:56:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 20:56:25,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:25,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:25,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:56:25,390 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:25,390 INFO L82 PathProgramCache]: Analyzing trace with hash -778776352, now seen corresponding path program 1 times [2020-10-14 20:56:25,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:25,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274772526] [2020-10-14 20:56:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:28,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 20:56:30,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 20:56:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4816 [2020-10-14 20:56:30,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:56:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 20:56:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:56:30,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:30,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-14 20:56:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:56:30,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:30,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 20:56:30,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:56:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 107 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:56:31,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274772526] [2020-10-14 20:56:31,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:31,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:56:31,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429761982] [2020-10-14 20:56:31,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:56:31,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:31,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:56:31,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:31,123 INFO L87 Difference]: Start difference. First operand 3800 states and 4914 transitions. Second operand 6 states. [2020-10-14 20:56:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:33,704 INFO L93 Difference]: Finished difference Result 9558 states and 12730 transitions. [2020-10-14 20:56:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:56:33,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-10-14 20:56:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:33,732 INFO L225 Difference]: With dead ends: 9558 [2020-10-14 20:56:33,732 INFO L226 Difference]: Without dead ends: 5764 [2020-10-14 20:56:33,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:56:33,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2020-10-14 20:56:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5548. [2020-10-14 20:56:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2020-10-14 20:56:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 7284 transitions. [2020-10-14 20:56:33,888 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 7284 transitions. Word has length 250 [2020-10-14 20:56:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:33,889 INFO L479 AbstractCegarLoop]: Abstraction has 5548 states and 7284 transitions. [2020-10-14 20:56:33,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:56:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 7284 transitions. [2020-10-14 20:56:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 20:56:33,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:33,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:33,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:56:33,900 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:33,901 INFO L82 PathProgramCache]: Analyzing trace with hash -957711129, now seen corresponding path program 1 times [2020-10-14 20:56:33,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:33,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442365092] [2020-10-14 20:56:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:34,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:34,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 20:56:34,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-14 20:56:34,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:34,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 20:56:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 20:56:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:35,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:35,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:35,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:35,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:35,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:35,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:35,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:35,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:56:35,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 20:56:35,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:35,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:56:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:35,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:35,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:35,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 20:56:35,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 20:56:35,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:35,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 20:56:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 20:56:35,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442365092] [2020-10-14 20:56:35,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:35,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:56:35,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050975279] [2020-10-14 20:56:35,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:56:35,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:35,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:56:35,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:56:35,507 INFO L87 Difference]: Start difference. First operand 5548 states and 7284 transitions. Second operand 5 states. [2020-10-14 20:56:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:37,835 INFO L93 Difference]: Finished difference Result 12835 states and 17429 transitions. [2020-10-14 20:56:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:56:37,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-14 20:56:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:37,878 INFO L225 Difference]: With dead ends: 12835 [2020-10-14 20:56:37,879 INFO L226 Difference]: Without dead ends: 7293 [2020-10-14 20:56:37,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:37,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7293 states. [2020-10-14 20:56:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7293 to 7277. [2020-10-14 20:56:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7277 states. [2020-10-14 20:56:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7277 states to 7277 states and 9468 transitions. [2020-10-14 20:56:38,078 INFO L78 Accepts]: Start accepts. Automaton has 7277 states and 9468 transitions. Word has length 266 [2020-10-14 20:56:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:38,079 INFO L479 AbstractCegarLoop]: Abstraction has 7277 states and 9468 transitions. [2020-10-14 20:56:38,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:56:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 7277 states and 9468 transitions. [2020-10-14 20:56:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 20:56:38,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:38,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:38,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 20:56:38,091 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:38,092 INFO L82 PathProgramCache]: Analyzing trace with hash 762188279, now seen corresponding path program 1 times [2020-10-14 20:56:38,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:38,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252126518] [2020-10-14 20:56:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:39,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 20:56:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:56:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1733 [2020-10-14 20:56:39,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:39,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:56:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:56:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 20:56:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:40,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:40,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:56:40,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:40,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:40,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:40,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:40,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:40,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:56:40,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 20:56:40,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:40,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:56:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 20:56:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:56:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:40,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:40,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:56:40,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 20:56:40,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:40,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:40,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:56:40,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 107 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:56:40,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252126518] [2020-10-14 20:56:40,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:40,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:40,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265337185] [2020-10-14 20:56:40,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:40,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:40,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:40,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:40,876 INFO L87 Difference]: Start difference. First operand 7277 states and 9468 transitions. Second operand 7 states. [2020-10-14 20:56:44,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:44,726 INFO L93 Difference]: Finished difference Result 16711 states and 21950 transitions. [2020-10-14 20:56:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:44,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-14 20:56:44,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:44,755 INFO L225 Difference]: With dead ends: 16711 [2020-10-14 20:56:44,755 INFO L226 Difference]: Without dead ends: 9440 [2020-10-14 20:56:44,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9440 states. [2020-10-14 20:56:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9440 to 9238. [2020-10-14 20:56:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9238 states. [2020-10-14 20:56:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9238 states to 9238 states and 11757 transitions. [2020-10-14 20:56:44,976 INFO L78 Accepts]: Start accepts. Automaton has 9238 states and 11757 transitions. Word has length 266 [2020-10-14 20:56:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:44,977 INFO L479 AbstractCegarLoop]: Abstraction has 9238 states and 11757 transitions. [2020-10-14 20:56:44,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 9238 states and 11757 transitions. [2020-10-14 20:56:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 20:56:44,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:44,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:44,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 20:56:44,989 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:44,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1405953035, now seen corresponding path program 1 times [2020-10-14 20:56:44,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:44,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555140512] [2020-10-14 20:56:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:45,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:46,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 20:56:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:56:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-14 20:56:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:46,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:56:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 20:56:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:46,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:46,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:46,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:56:46,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:46,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:46,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:46,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:46,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:46,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 20:56:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:46,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:46,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 20:56:46,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 20:56:46,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:46,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 20:56:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 20:56:46,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555140512] [2020-10-14 20:56:46,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:46,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:56:46,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914927293] [2020-10-14 20:56:46,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:56:46,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:46,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:56:46,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:46,928 INFO L87 Difference]: Start difference. First operand 9238 states and 11757 transitions. Second operand 6 states. [2020-10-14 20:56:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:49,831 INFO L93 Difference]: Finished difference Result 23845 states and 31222 transitions. [2020-10-14 20:56:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:56:49,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 277 [2020-10-14 20:56:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:49,876 INFO L225 Difference]: With dead ends: 23845 [2020-10-14 20:56:49,876 INFO L226 Difference]: Without dead ends: 14815 [2020-10-14 20:56:49,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:56:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14815 states. [2020-10-14 20:56:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14815 to 14795. [2020-10-14 20:56:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14795 states. [2020-10-14 20:56:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14795 states to 14795 states and 18781 transitions. [2020-10-14 20:56:50,186 INFO L78 Accepts]: Start accepts. Automaton has 14795 states and 18781 transitions. Word has length 277 [2020-10-14 20:56:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:50,187 INFO L479 AbstractCegarLoop]: Abstraction has 14795 states and 18781 transitions. [2020-10-14 20:56:50,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:56:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 14795 states and 18781 transitions. [2020-10-14 20:56:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 20:56:50,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:50,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:50,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 20:56:50,197 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash -579171291, now seen corresponding path program 1 times [2020-10-14 20:56:50,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:50,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296527595] [2020-10-14 20:56:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:51,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:51,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 20:56:51,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-14 20:56:51,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:51,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 20:56:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:51,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:51,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:51,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:51,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:51,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 20:56:51,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:51,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:51,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:51,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:51,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:56:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 20:56:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:51,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:56:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:51,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296527595] [2020-10-14 20:56:51,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:51,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:51,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748038429] [2020-10-14 20:56:51,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:51,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:51,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:51,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:51,901 INFO L87 Difference]: Start difference. First operand 14795 states and 18781 transitions. Second operand 7 states. [2020-10-14 20:56:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:55,720 INFO L93 Difference]: Finished difference Result 32893 states and 42494 transitions. [2020-10-14 20:56:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:55,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-14 20:56:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:55,767 INFO L225 Difference]: With dead ends: 32893 [2020-10-14 20:56:55,767 INFO L226 Difference]: Without dead ends: 18306 [2020-10-14 20:56:55,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18306 states. [2020-10-14 20:56:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18306 to 18274. [2020-10-14 20:56:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18274 states. [2020-10-14 20:56:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18274 states to 18274 states and 23088 transitions. [2020-10-14 20:56:56,117 INFO L78 Accepts]: Start accepts. Automaton has 18274 states and 23088 transitions. Word has length 280 [2020-10-14 20:56:56,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:56,118 INFO L479 AbstractCegarLoop]: Abstraction has 18274 states and 23088 transitions. [2020-10-14 20:56:56,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 18274 states and 23088 transitions. [2020-10-14 20:56:56,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 20:56:56,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:56,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:56,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 20:56:56,137 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:56,138 INFO L82 PathProgramCache]: Analyzing trace with hash 581949254, now seen corresponding path program 1 times [2020-10-14 20:56:56,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:56,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173957972] [2020-10-14 20:56:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 20:56:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:57,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:57,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:56:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:57,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 20:56:57,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 20:56:57,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 20:56:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 20:56:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:57,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:57,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:56:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:56:58,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173957972] [2020-10-14 20:56:58,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:58,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:58,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100904108] [2020-10-14 20:56:58,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:58,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:58,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:58,046 INFO L87 Difference]: Start difference. First operand 18274 states and 23088 transitions. Second operand 7 states. [2020-10-14 20:57:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:00,930 INFO L93 Difference]: Finished difference Result 38526 states and 50332 transitions. [2020-10-14 20:57:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:57:00,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-14 20:57:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:00,985 INFO L225 Difference]: With dead ends: 38526 [2020-10-14 20:57:00,985 INFO L226 Difference]: Without dead ends: 20460 [2020-10-14 20:57:01,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20460 states. [2020-10-14 20:57:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20460 to 19552. [2020-10-14 20:57:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19552 states. [2020-10-14 20:57:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19552 states to 19552 states and 24353 transitions. [2020-10-14 20:57:01,515 INFO L78 Accepts]: Start accepts. Automaton has 19552 states and 24353 transitions. Word has length 304 [2020-10-14 20:57:01,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:01,517 INFO L479 AbstractCegarLoop]: Abstraction has 19552 states and 24353 transitions. [2020-10-14 20:57:01,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19552 states and 24353 transitions. [2020-10-14 20:57:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-14 20:57:01,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:01,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:01,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 20:57:01,531 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:01,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:01,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1464108253, now seen corresponding path program 1 times [2020-10-14 20:57:01,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:01,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829532576] [2020-10-14 20:57:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:01,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:06,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:06,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 20:57:06,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 20:57:06,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 20:57:06,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:06,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:57:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:57:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 20:57:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:06,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:06,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:06,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:57:06,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:06,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:57:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:06,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:06,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:06,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:06,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 20:57:06,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:06,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 20:57:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:57:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:07,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:07,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:57:07,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 20:57:07,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:07,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:57:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:57:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-14 20:57:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:57:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 20:57:07,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:07,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:57:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 104 proven. 212 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 20:57:08,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829532576] [2020-10-14 20:57:08,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:08,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 20:57:08,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627881879] [2020-10-14 20:57:08,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:57:08,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:08,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:57:08,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:57:08,224 INFO L87 Difference]: Start difference. First operand 19552 states and 24353 transitions. Second operand 10 states. [2020-10-14 20:57:09,575 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-14 20:57:10,653 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-14 20:57:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:12,153 INFO L93 Difference]: Finished difference Result 42110 states and 52727 transitions. [2020-10-14 20:57:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 20:57:12,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 323 [2020-10-14 20:57:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:12,214 INFO L225 Difference]: With dead ends: 42110 [2020-10-14 20:57:12,214 INFO L226 Difference]: Without dead ends: 22736 [2020-10-14 20:57:12,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-14 20:57:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22736 states. [2020-10-14 20:57:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22736 to 22638. [2020-10-14 20:57:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22638 states. [2020-10-14 20:57:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22638 states to 22638 states and 27938 transitions. [2020-10-14 20:57:12,625 INFO L78 Accepts]: Start accepts. Automaton has 22638 states and 27938 transitions. Word has length 323 [2020-10-14 20:57:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:12,625 INFO L479 AbstractCegarLoop]: Abstraction has 22638 states and 27938 transitions. [2020-10-14 20:57:12,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:57:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22638 states and 27938 transitions. [2020-10-14 20:57:12,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-14 20:57:12,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:12,637 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:12,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 20:57:12,637 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:12,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:12,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2079785936, now seen corresponding path program 1 times [2020-10-14 20:57:12,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:12,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743482537] [2020-10-14 20:57:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:15,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:17,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-14 20:57:17,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 20:57:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 20:57:17,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:17,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:57:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:57:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-14 20:57:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:18,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:18,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:57:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:18,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:18,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:18,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:57:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:57:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 20:57:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:18,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 20:57:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:57:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:19,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:19,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 20:57:19,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:19,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 20:57:19,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:19,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:57:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:19,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 20:57:19,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-14 20:57:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:19,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:19,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:57:19,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 20:57:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:19,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:57:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 171 proven. 100 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 20:57:19,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743482537] [2020-10-14 20:57:19,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:19,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 20:57:19,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542409891] [2020-10-14 20:57:19,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:57:19,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:19,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:57:19,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:57:19,414 INFO L87 Difference]: Start difference. First operand 22638 states and 27938 transitions. Second operand 10 states. [2020-10-14 20:57:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:24,052 INFO L93 Difference]: Finished difference Result 48775 states and 60958 transitions. [2020-10-14 20:57:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 20:57:24,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 339 [2020-10-14 20:57:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:24,134 INFO L225 Difference]: With dead ends: 48775 [2020-10-14 20:57:24,135 INFO L226 Difference]: Without dead ends: 29421 [2020-10-14 20:57:24,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-14 20:57:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29421 states. [2020-10-14 20:57:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29421 to 28444. [2020-10-14 20:57:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28444 states. [2020-10-14 20:57:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28444 states to 28444 states and 35008 transitions. [2020-10-14 20:57:24,610 INFO L78 Accepts]: Start accepts. Automaton has 28444 states and 35008 transitions. Word has length 339 [2020-10-14 20:57:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:24,611 INFO L479 AbstractCegarLoop]: Abstraction has 28444 states and 35008 transitions. [2020-10-14 20:57:24,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:57:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 28444 states and 35008 transitions. [2020-10-14 20:57:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 20:57:24,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:24,622 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:24,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 20:57:24,622 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1444408181, now seen corresponding path program 1 times [2020-10-14 20:57:24,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:24,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89946388] [2020-10-14 20:57:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 20:57:27,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:57:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2892 [2020-10-14 20:57:27,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 20:57:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 20:57:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:27,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:27,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:57:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 20:57:27,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:57:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 20:57:27,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 20:57:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 20:57:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 20:57:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:27,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 20:57:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 20:57:28,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89946388] [2020-10-14 20:57:28,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:28,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:28,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170392264] [2020-10-14 20:57:28,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:28,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:28,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:28,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:28,225 INFO L87 Difference]: Start difference. First operand 28444 states and 35008 transitions. Second operand 7 states. [2020-10-14 20:57:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:30,777 INFO L93 Difference]: Finished difference Result 47814 states and 59002 transitions. [2020-10-14 20:57:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 20:57:30,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-10-14 20:57:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:30,819 INFO L225 Difference]: With dead ends: 47814 [2020-10-14 20:57:30,820 INFO L226 Difference]: Without dead ends: 21704 [2020-10-14 20:57:30,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:57:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21704 states. [2020-10-14 20:57:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21704 to 19593. [2020-10-14 20:57:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19593 states. [2020-10-14 20:57:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19593 states to 19593 states and 23146 transitions. [2020-10-14 20:57:31,156 INFO L78 Accepts]: Start accepts. Automaton has 19593 states and 23146 transitions. Word has length 344 [2020-10-14 20:57:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:31,157 INFO L479 AbstractCegarLoop]: Abstraction has 19593 states and 23146 transitions. [2020-10-14 20:57:31,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 19593 states and 23146 transitions. [2020-10-14 20:57:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-14 20:57:31,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:31,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:31,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 20:57:31,167 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:31,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2114261367, now seen corresponding path program 1 times [2020-10-14 20:57:31,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:31,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882918960] [2020-10-14 20:57:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-14 20:57:36,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:57:36,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 20:57:36,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 20:57:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 20:57:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:36,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:57:36,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:57:36,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 20:57:36,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 20:57:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:57:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:57:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 20:57:36,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:57:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-14 20:57:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:36,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 207 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 20:57:36,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882918960] [2020-10-14 20:57:36,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:36,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:36,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691971738] [2020-10-14 20:57:36,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:36,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:36,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:36,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:36,786 INFO L87 Difference]: Start difference. First operand 19593 states and 23146 transitions. Second operand 7 states. [2020-10-14 20:57:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:39,354 INFO L93 Difference]: Finished difference Result 40114 states and 47447 transitions. [2020-10-14 20:57:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:57:39,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-14 20:57:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:39,390 INFO L225 Difference]: With dead ends: 40114 [2020-10-14 20:57:39,390 INFO L226 Difference]: Without dead ends: 23221 [2020-10-14 20:57:39,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23221 states. [2020-10-14 20:57:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23221 to 21475. [2020-10-14 20:57:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21475 states. [2020-10-14 20:57:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21475 states to 21475 states and 25165 transitions. [2020-10-14 20:57:39,728 INFO L78 Accepts]: Start accepts. Automaton has 21475 states and 25165 transitions. Word has length 355 [2020-10-14 20:57:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:39,729 INFO L479 AbstractCegarLoop]: Abstraction has 21475 states and 25165 transitions. [2020-10-14 20:57:39,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21475 states and 25165 transitions. [2020-10-14 20:57:39,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 20:57:39,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:39,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:39,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 20:57:39,744 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:39,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1958038730, now seen corresponding path program 1 times [2020-10-14 20:57:39,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:39,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99189777] [2020-10-14 20:57:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:39,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:44,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 20:57:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:44,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:44,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:44,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:44,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:44,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:44,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:45,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:45,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:57:45,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 20:57:45,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:45,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:57:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:57:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:45,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:45,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:45,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:57:45,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 20:57:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:45,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:57:45,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-14 20:57:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:45,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:45,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:57:45,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:45,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 20:57:45,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:45,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 20:57:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 207 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 20:57:45,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99189777] [2020-10-14 20:57:45,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:45,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:45,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240294142] [2020-10-14 20:57:45,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:45,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:45,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:45,431 INFO L87 Difference]: Start difference. First operand 21475 states and 25165 transitions. Second operand 7 states. [2020-10-14 20:57:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:48,635 INFO L93 Difference]: Finished difference Result 40301 states and 47313 transitions. [2020-10-14 20:57:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:57:48,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-14 20:57:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:48,677 INFO L225 Difference]: With dead ends: 40301 [2020-10-14 20:57:48,677 INFO L226 Difference]: Without dead ends: 22478 [2020-10-14 20:57:48,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22478 states. [2020-10-14 20:57:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22478 to 22429. [2020-10-14 20:57:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22429 states. [2020-10-14 20:57:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22429 states to 22429 states and 26161 transitions. [2020-10-14 20:57:49,116 INFO L78 Accepts]: Start accepts. Automaton has 22429 states and 26161 transitions. Word has length 376 [2020-10-14 20:57:49,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:49,117 INFO L479 AbstractCegarLoop]: Abstraction has 22429 states and 26161 transitions. [2020-10-14 20:57:49,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 22429 states and 26161 transitions. [2020-10-14 20:57:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-14 20:57:49,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:49,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:49,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 20:57:49,129 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:49,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1067969099, now seen corresponding path program 1 times [2020-10-14 20:57:49,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:49,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447822667] [2020-10-14 20:57:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:51,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-14 20:57:51,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:57:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2455 [2020-10-14 20:57:51,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:51,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-14 20:57:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 20:57:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:51,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:51,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:51,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:57:51,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:51,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:51,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:57:51,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:51,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:57:51,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:51,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:51,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:51,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:51,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:51,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:57:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:51,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 20:57:51,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 20:57:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:51,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:57:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 20:57:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:52,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:57:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 20:57:52,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447822667] [2020-10-14 20:57:52,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:52,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:57:52,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921340469] [2020-10-14 20:57:52,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:57:52,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:52,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:57:52,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:57:52,404 INFO L87 Difference]: Start difference. First operand 22429 states and 26161 transitions. Second operand 8 states. [2020-10-14 20:57:53,595 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-14 20:57:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:56,771 INFO L93 Difference]: Finished difference Result 42211 states and 49341 transitions. [2020-10-14 20:57:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:57:56,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 395 [2020-10-14 20:57:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:56,812 INFO L225 Difference]: With dead ends: 42211 [2020-10-14 20:57:56,812 INFO L226 Difference]: Without dead ends: 23632 [2020-10-14 20:57:56,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-14 20:57:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23632 states. [2020-10-14 20:57:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23632 to 23197. [2020-10-14 20:57:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23197 states. [2020-10-14 20:57:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23197 states to 23197 states and 26985 transitions. [2020-10-14 20:57:57,198 INFO L78 Accepts]: Start accepts. Automaton has 23197 states and 26985 transitions. Word has length 395 [2020-10-14 20:57:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:57,199 INFO L479 AbstractCegarLoop]: Abstraction has 23197 states and 26985 transitions. [2020-10-14 20:57:57,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:57:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 23197 states and 26985 transitions. [2020-10-14 20:57:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-14 20:57:57,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:57,215 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:57:57,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 20:57:57,216 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:57,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1011524681, now seen corresponding path program 1 times [2020-10-14 20:57:57,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:57,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889461632] [2020-10-14 20:57:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:58,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:58,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-14 20:57:58,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-14 20:57:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:58,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 20:57:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 20:57:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:58,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:58,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:58,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:58,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:58,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:58,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 20:57:58,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:58,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:58,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:58,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:58,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:57:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:58,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:58,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 20:57:58,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 20:57:58,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:58,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 20:57:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:58,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 20:57:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:57:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 20:57:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:58,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:57:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 20:57:59,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889461632] [2020-10-14 20:57:59,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:59,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:59,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47388611] [2020-10-14 20:57:59,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:59,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:59,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:59,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:59,352 INFO L87 Difference]: Start difference. First operand 23197 states and 26985 transitions. Second operand 7 states. [2020-10-14 20:58:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:02,871 INFO L93 Difference]: Finished difference Result 42784 states and 49913 transitions. [2020-10-14 20:58:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:58:02,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-14 20:58:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:02,912 INFO L225 Difference]: With dead ends: 42784 [2020-10-14 20:58:02,912 INFO L226 Difference]: Without dead ends: 23245 [2020-10-14 20:58:02,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:58:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23245 states. [2020-10-14 20:58:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23245 to 23193. [2020-10-14 20:58:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23193 states. [2020-10-14 20:58:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23193 states to 23193 states and 26889 transitions. [2020-10-14 20:58:03,179 INFO L78 Accepts]: Start accepts. Automaton has 23193 states and 26889 transitions. Word has length 418 [2020-10-14 20:58:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:03,179 INFO L479 AbstractCegarLoop]: Abstraction has 23193 states and 26889 transitions. [2020-10-14 20:58:03,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:03,179 INFO L276 IsEmpty]: Start isEmpty. Operand 23193 states and 26889 transitions. [2020-10-14 20:58:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-14 20:58:03,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:03,190 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:58:03,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 20:58:03,190 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:03,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2006345717, now seen corresponding path program 1 times [2020-10-14 20:58:03,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:03,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435339575] [2020-10-14 20:58:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:03,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:05,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:05,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 20:58:05,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:58:05,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-10-14 20:58:05,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:05,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:05,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:05,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 20:58:05,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 20:58:05,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:05,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:05,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:05,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:05,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:58:05,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:05,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:05,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:05,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:05,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:05,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:58:05,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 20:58:05,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:05,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:58:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:05,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 20:58:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 20:58:05,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:05,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 20:58:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:05,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 20:58:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:58:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 20:58:05,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:05,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:58:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 20:58:06,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435339575] [2020-10-14 20:58:06,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:06,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:06,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116214791] [2020-10-14 20:58:06,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:06,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:06,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:06,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:06,313 INFO L87 Difference]: Start difference. First operand 23193 states and 26889 transitions. Second operand 7 states. [2020-10-14 20:58:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:09,308 INFO L93 Difference]: Finished difference Result 43536 states and 50763 transitions. [2020-10-14 20:58:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:58:09,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-14 20:58:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:09,344 INFO L225 Difference]: With dead ends: 43536 [2020-10-14 20:58:09,344 INFO L226 Difference]: Without dead ends: 23237 [2020-10-14 20:58:09,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23237 states. [2020-10-14 20:58:09,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23237 to 23179. [2020-10-14 20:58:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23179 states. [2020-10-14 20:58:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23179 states to 23179 states and 26784 transitions. [2020-10-14 20:58:09,594 INFO L78 Accepts]: Start accepts. Automaton has 23179 states and 26784 transitions. Word has length 419 [2020-10-14 20:58:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:09,595 INFO L479 AbstractCegarLoop]: Abstraction has 23179 states and 26784 transitions. [2020-10-14 20:58:09,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 23179 states and 26784 transitions. [2020-10-14 20:58:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-14 20:58:09,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:09,606 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:09,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 20:58:09,606 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:09,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1156567544, now seen corresponding path program 1 times [2020-10-14 20:58:09,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:09,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900715227] [2020-10-14 20:58:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:12,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-14 20:58:13,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:58:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4058 [2020-10-14 20:58:13,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:58:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 20:58:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 20:58:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:13,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:58:13,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:13,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:58:13,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:58:13,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:58:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:13,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:58:13,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:13,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:13,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:58:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:13,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:58:13,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 20:58:13,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:13,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:14,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 20:58:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:14,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:14,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:58:14,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 20:58:14,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:14,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:58:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 333 proven. 34 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-14 20:58:14,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900715227] [2020-10-14 20:58:14,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:14,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:58:14,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736333865] [2020-10-14 20:58:14,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:58:14,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:14,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:58:14,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:58:14,345 INFO L87 Difference]: Start difference. First operand 23179 states and 26784 transitions. Second operand 6 states. [2020-10-14 20:58:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:17,190 INFO L93 Difference]: Finished difference Result 45040 states and 52435 transitions. [2020-10-14 20:58:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:58:17,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 423 [2020-10-14 20:58:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:17,235 INFO L225 Difference]: With dead ends: 45040 [2020-10-14 20:58:17,235 INFO L226 Difference]: Without dead ends: 25523 [2020-10-14 20:58:17,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:58:17,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25523 states. [2020-10-14 20:58:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25523 to 24522. [2020-10-14 20:58:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24522 states. [2020-10-14 20:58:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24522 states to 24522 states and 28440 transitions. [2020-10-14 20:58:17,539 INFO L78 Accepts]: Start accepts. Automaton has 24522 states and 28440 transitions. Word has length 423 [2020-10-14 20:58:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:17,539 INFO L479 AbstractCegarLoop]: Abstraction has 24522 states and 28440 transitions. [2020-10-14 20:58:17,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:58:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 24522 states and 28440 transitions. [2020-10-14 20:58:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-14 20:58:17,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:17,549 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:17,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 20:58:17,549 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:17,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1831582595, now seen corresponding path program 1 times [2020-10-14 20:58:17,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:17,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990286571] [2020-10-14 20:58:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:21,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-14 20:58:21,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:58:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3968 [2020-10-14 20:58:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:21,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 20:58:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 20:58:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:21,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:21,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:21,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:21,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:58:21,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 20:58:21,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:21,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:58:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:21,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:21,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 20:58:21,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:21,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 20:58:21,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:21,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:21,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:21,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 20:58:21,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:21,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 20:58:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:21,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:21,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 20:58:21,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 20:58:21,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:21,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 20:58:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-14 20:58:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:58:22,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:22,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:58:22,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:22,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 20:58:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 323 proven. 79 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-14 20:58:22,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990286571] [2020-10-14 20:58:22,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:22,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:22,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259643835] [2020-10-14 20:58:22,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:22,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:22,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:22,309 INFO L87 Difference]: Start difference. First operand 24522 states and 28440 transitions. Second operand 7 states. [2020-10-14 20:58:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:25,402 INFO L93 Difference]: Finished difference Result 46614 states and 54235 transitions. [2020-10-14 20:58:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:58:25,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-14 20:58:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:25,450 INFO L225 Difference]: With dead ends: 46614 [2020-10-14 20:58:25,450 INFO L226 Difference]: Without dead ends: 23051 [2020-10-14 20:58:25,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23051 states. [2020-10-14 20:58:25,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23051 to 22779. [2020-10-14 20:58:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22779 states. [2020-10-14 20:58:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22779 states to 22779 states and 25950 transitions. [2020-10-14 20:58:25,762 INFO L78 Accepts]: Start accepts. Automaton has 22779 states and 25950 transitions. Word has length 440 [2020-10-14 20:58:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:25,762 INFO L479 AbstractCegarLoop]: Abstraction has 22779 states and 25950 transitions. [2020-10-14 20:58:25,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 22779 states and 25950 transitions. [2020-10-14 20:58:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-14 20:58:25,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:25,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:58:25,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 20:58:25,770 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash 956413131, now seen corresponding path program 1 times [2020-10-14 20:58:25,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:25,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550364692] [2020-10-14 20:58:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:31,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:31,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-14 20:58:31,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:58:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 20:58:31,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:31,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 20:58:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:58:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 457 [2020-10-14 20:58:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:31,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:31,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:31,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:31,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:31,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:58:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:31,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:58:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:31,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:31,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 20:58:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 20:58:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:31,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 20:58:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 20:58:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:31,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:31,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 20:58:31,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 20:58:31,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:31,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:58:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 20:58:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:31,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-14 20:58:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:31,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:31,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:58:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:58:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 20:58:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:31,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:58:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-14 20:58:32,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550364692] [2020-10-14 20:58:32,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:32,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:32,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745151029] [2020-10-14 20:58:32,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:58:32,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:32,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:58:32,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:58:32,113 INFO L87 Difference]: Start difference. First operand 22779 states and 25950 transitions. Second operand 8 states. [2020-10-14 20:58:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:35,804 INFO L93 Difference]: Finished difference Result 47739 states and 54272 transitions. [2020-10-14 20:58:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 20:58:35,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2020-10-14 20:58:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:35,862 INFO L225 Difference]: With dead ends: 47739 [2020-10-14 20:58:35,862 INFO L226 Difference]: Without dead ends: 25344 [2020-10-14 20:58:35,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 20:58:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25344 states. [2020-10-14 20:58:36,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25344 to 24693. [2020-10-14 20:58:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24693 states. [2020-10-14 20:58:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24693 states to 24693 states and 27957 transitions. [2020-10-14 20:58:36,171 INFO L78 Accepts]: Start accepts. Automaton has 24693 states and 27957 transitions. Word has length 449 [2020-10-14 20:58:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:36,171 INFO L479 AbstractCegarLoop]: Abstraction has 24693 states and 27957 transitions. [2020-10-14 20:58:36,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:58:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24693 states and 27957 transitions. [2020-10-14 20:58:36,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-14 20:58:36,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:36,181 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:36,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 20:58:36,181 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:36,182 INFO L82 PathProgramCache]: Analyzing trace with hash 727769418, now seen corresponding path program 1 times [2020-10-14 20:58:36,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:36,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896506159] [2020-10-14 20:58:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:38,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:39,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3698 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 20:58:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:40,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:40,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:40,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:40,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:40,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:58:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:58:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:40,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:58:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:40,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:40,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 20:58:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:40,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 20:58:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 20:58:40,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 20:58:40,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:40,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:58:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 20:58:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-14 20:58:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:40,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:40,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:58:40,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 20:58:40,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:40,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:58:40,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 595 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 20:58:40,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896506159] [2020-10-14 20:58:40,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:40,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 20:58:40,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441101062] [2020-10-14 20:58:40,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:58:40,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:40,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:58:40,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:58:40,985 INFO L87 Difference]: Start difference. First operand 24693 states and 27957 transitions. Second operand 10 states. [2020-10-14 20:58:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:47,241 INFO L93 Difference]: Finished difference Result 57628 states and 66166 transitions. [2020-10-14 20:58:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 20:58:47,242 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 485 [2020-10-14 20:58:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:47,294 INFO L225 Difference]: With dead ends: 57628 [2020-10-14 20:58:47,294 INFO L226 Difference]: Without dead ends: 33515 [2020-10-14 20:58:47,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-10-14 20:58:47,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33515 states. [2020-10-14 20:58:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33515 to 30031. [2020-10-14 20:58:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30031 states. [2020-10-14 20:58:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30031 states to 30031 states and 34187 transitions. [2020-10-14 20:58:47,676 INFO L78 Accepts]: Start accepts. Automaton has 30031 states and 34187 transitions. Word has length 485 [2020-10-14 20:58:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:47,676 INFO L479 AbstractCegarLoop]: Abstraction has 30031 states and 34187 transitions. [2020-10-14 20:58:47,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:58:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 30031 states and 34187 transitions. [2020-10-14 20:58:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-14 20:58:47,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:47,694 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:47,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 20:58:47,695 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:47,695 INFO L82 PathProgramCache]: Analyzing trace with hash 416899466, now seen corresponding path program 1 times [2020-10-14 20:58:47,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:47,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398811227] [2020-10-14 20:58:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-14 20:58:51,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:58:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3273 [2020-10-14 20:58:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:51,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 20:58:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 20:58:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 20:58:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:51,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:51,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:51,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:51,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:51,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:51,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:51,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:51,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:51,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:58:51,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:58:51,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:51,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:58:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:58:51,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 20:58:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 20:58:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 20:58:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:51,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:51,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 20:58:51,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-14 20:58:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:51,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:58:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 20:58:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:51,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-14 20:58:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:51,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:51,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:51,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:58:51,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:51,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 20:58:51,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:51,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:51,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:51,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:51,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:58:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 534 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-14 20:58:52,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398811227] [2020-10-14 20:58:52,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:52,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 20:58:52,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630464585] [2020-10-14 20:58:52,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 20:58:52,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:52,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 20:58:52,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 20:58:52,104 INFO L87 Difference]: Start difference. First operand 30031 states and 34187 transitions. Second operand 9 states. [2020-10-14 20:58:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:58,512 INFO L93 Difference]: Finished difference Result 57268 states and 65298 transitions. [2020-10-14 20:58:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 20:58:58,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 552 [2020-10-14 20:58:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:58,568 INFO L225 Difference]: With dead ends: 57268 [2020-10-14 20:58:58,568 INFO L226 Difference]: Without dead ends: 32423 [2020-10-14 20:58:58,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-14 20:58:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32423 states. [2020-10-14 20:58:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32423 to 30603. [2020-10-14 20:58:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30603 states. [2020-10-14 20:58:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30603 states to 30603 states and 34756 transitions. [2020-10-14 20:58:58,967 INFO L78 Accepts]: Start accepts. Automaton has 30603 states and 34756 transitions. Word has length 552 [2020-10-14 20:58:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:58,968 INFO L479 AbstractCegarLoop]: Abstraction has 30603 states and 34756 transitions. [2020-10-14 20:58:58,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 20:58:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 30603 states and 34756 transitions. [2020-10-14 20:58:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-10-14 20:58:58,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:58,992 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:58,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 20:58:58,992 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash -632526799, now seen corresponding path program 1 times [2020-10-14 20:58:58,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:58,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49437297] [2020-10-14 20:58:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-14 20:59:04,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:59:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 20:59:04,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:59:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 335 [2020-10-14 20:59:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:59:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:59:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 20:59:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:59:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:04,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:59:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 20:59:04,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 20:59:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 20:59:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 20:59:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:04,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:04,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 20:59:04,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 20:59:04,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:04,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 20:59:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:04,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-10-14 20:59:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:05,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:05,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:59:05,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:05,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:59:05,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:05,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 20:59:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 362 proven. 158 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2020-10-14 20:59:05,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49437297] [2020-10-14 20:59:05,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:05,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:59:05,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600234413] [2020-10-14 20:59:05,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:59:05,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:05,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:59:05,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:59:05,315 INFO L87 Difference]: Start difference. First operand 30603 states and 34756 transitions. Second operand 7 states. [2020-10-14 20:59:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:09,667 INFO L93 Difference]: Finished difference Result 63182 states and 71688 transitions. [2020-10-14 20:59:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:59:09,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 565 [2020-10-14 20:59:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:09,720 INFO L225 Difference]: With dead ends: 63182 [2020-10-14 20:59:09,720 INFO L226 Difference]: Without dead ends: 33159 [2020-10-14 20:59:09,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:59:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33159 states. [2020-10-14 20:59:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33159 to 31939. [2020-10-14 20:59:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31939 states. [2020-10-14 20:59:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31939 states to 31939 states and 36102 transitions. [2020-10-14 20:59:10,122 INFO L78 Accepts]: Start accepts. Automaton has 31939 states and 36102 transitions. Word has length 565 [2020-10-14 20:59:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:10,123 INFO L479 AbstractCegarLoop]: Abstraction has 31939 states and 36102 transitions. [2020-10-14 20:59:10,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:59:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 31939 states and 36102 transitions. [2020-10-14 20:59:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2020-10-14 20:59:10,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:10,140 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:10,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 20:59:10,141 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash -531625640, now seen corresponding path program 1 times [2020-10-14 20:59:10,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:10,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243041761] [2020-10-14 20:59:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:10,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:11,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:11,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 600 [2020-10-14 20:59:15,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:59:15,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 20:59:15,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:59:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 20:59:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-14 20:59:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:15,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:15,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:59:15,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:59:15,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:15,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:59:15,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:59:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:59:15,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 20:59:15,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:59:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:59:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 20:59:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:59:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 20:59:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 20:59:15,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:59:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 20:59:15,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 20:59:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:15,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-14 20:59:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:15,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:15,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:59:15,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:15,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 20:59:15,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:15,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:15,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 490 proven. 4 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2020-10-14 20:59:16,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243041761] [2020-10-14 20:59:16,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:16,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:59:16,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438131148] [2020-10-14 20:59:16,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:59:16,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:16,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:59:16,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:59:16,343 INFO L87 Difference]: Start difference. First operand 31939 states and 36102 transitions. Second operand 8 states. [2020-10-14 20:59:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:59:21,076 INFO L93 Difference]: Finished difference Result 62625 states and 70708 transitions. [2020-10-14 20:59:21,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 20:59:21,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 582 [2020-10-14 20:59:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:59:21,124 INFO L225 Difference]: With dead ends: 62625 [2020-10-14 20:59:21,124 INFO L226 Difference]: Without dead ends: 30880 [2020-10-14 20:59:21,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 20:59:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30880 states. [2020-10-14 20:59:21,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30880 to 29078. [2020-10-14 20:59:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29078 states. [2020-10-14 20:59:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29078 states to 29078 states and 32164 transitions. [2020-10-14 20:59:21,473 INFO L78 Accepts]: Start accepts. Automaton has 29078 states and 32164 transitions. Word has length 582 [2020-10-14 20:59:21,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:59:21,473 INFO L479 AbstractCegarLoop]: Abstraction has 29078 states and 32164 transitions. [2020-10-14 20:59:21,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:59:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 29078 states and 32164 transitions. [2020-10-14 20:59:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-14 20:59:21,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:59:21,490 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:59:21,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 20:59:21,490 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:59:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:59:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash -643342753, now seen corresponding path program 1 times [2020-10-14 20:59:21,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:59:21,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248067896] [2020-10-14 20:59:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:59:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:26,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:26,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-14 20:59:26,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:59:26,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 20:59:26,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:26,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 20:59:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 20:59:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 342 [2020-10-14 20:59:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:59:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:26,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:26,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:59:26,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:59:26,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:26,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:59:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:26,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:59:26,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 20:59:26,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:26,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:59:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:59:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:59:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:26,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:26,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:59:26,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:26,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 20:59:26,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:26,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:59:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:59:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:26,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:26,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:59:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:26,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:26,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 20:59:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:27,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-14 20:59:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:27,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:27,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 20:59:27,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 20:59:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:27,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:59:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 20:59:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-14 20:59:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:59:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:59:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:59:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:59:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:59:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 736 proven. 12 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 20:59:27,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248067896] [2020-10-14 20:59:27,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:59:27,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 20:59:27,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233775550] [2020-10-14 20:59:27,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 20:59:27,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:59:27,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 20:59:27,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 20:59:27,647 INFO L87 Difference]: Start difference. First operand 29078 states and 32164 transitions. Second operand 9 states.