/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:41:50,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:41:50,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:41:50,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:41:50,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:41:50,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:41:50,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:41:50,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:41:50,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:41:50,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:41:50,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:41:50,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:41:50,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:41:50,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:41:50,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:41:50,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:41:50,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:41:50,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:41:50,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:41:50,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:41:50,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:41:50,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:41:50,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:41:50,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:41:50,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:41:50,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:41:50,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:41:50,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:41:50,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:41:50,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:41:50,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:41:50,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:41:50,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:41:50,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:41:50,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:41:50,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:41:50,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:41:50,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:41:50,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:41:50,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:41:50,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:41:50,629 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 02:41:50,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:41:50,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:41:50,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:41:50,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:41:50,652 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:41:50,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:41:50,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:41:50,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:41:50,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:41:50,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:41:50,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:41:50,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:41:50,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:41:50,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:41:50,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:41:50,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:41:50,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:41:50,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:41:50,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:41:50,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:41:50,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:41:50,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:41:50,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:41:50,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:41:50,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:41:50,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:41:50,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:41:50,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:41:50,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:41:50,657 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:41:50,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:41:50,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:41:50,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:41:50,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:41:50,966 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:41:50,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2020-10-14 02:41:51,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77ff7ab5f/36eaedba9052436483b31a09749ab651/FLAG740458c4c [2020-10-14 02:41:51,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:41:51,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2020-10-14 02:41:51,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77ff7ab5f/36eaedba9052436483b31a09749ab651/FLAG740458c4c [2020-10-14 02:41:51,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77ff7ab5f/36eaedba9052436483b31a09749ab651 [2020-10-14 02:41:51,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:41:51,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:41:51,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:41:51,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:41:51,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:41:51,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:41:51" (1/1) ... [2020-10-14 02:41:51,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:51, skipping insertion in model container [2020-10-14 02:41:51,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:41:51" (1/1) ... [2020-10-14 02:41:51,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:41:52,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:41:53,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:41:53,496 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:41:54,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:41:54,129 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:41:54,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54 WrapperNode [2020-10-14 02:41:54,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:41:54,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:41:54,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:41:54,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:41:54,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (1/1) ... [2020-10-14 02:41:54,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (1/1) ... [2020-10-14 02:41:54,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (1/1) ... [2020-10-14 02:41:54,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (1/1) ... [2020-10-14 02:41:54,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (1/1) ... [2020-10-14 02:41:54,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (1/1) ... [2020-10-14 02:41:54,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (1/1) ... [2020-10-14 02:41:54,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:41:54,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:41:54,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:41:54,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:41:54,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (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 02:41:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:41:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:41:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:41:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:41:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:41:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:41:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:41:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:41:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:41:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:41:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:41:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:41:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:41:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:41:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:41:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:41:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:41:59,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:41:59,435 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:41:59,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:41:59 BoogieIcfgContainer [2020-10-14 02:41:59,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:41:59,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:41:59,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:41:59,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:41:59,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:41:51" (1/3) ... [2020-10-14 02:41:59,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c301d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:41:59, skipping insertion in model container [2020-10-14 02:41:59,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:54" (2/3) ... [2020-10-14 02:41:59,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c301d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:41:59, skipping insertion in model container [2020-10-14 02:41:59,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:41:59" (3/3) ... [2020-10-14 02:41:59,464 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label02.c [2020-10-14 02:41:59,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:41:59,490 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:41:59,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:41:59,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:41:59,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:41:59,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:41:59,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:41:59,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:41:59,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:41:59,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:41:59,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:41:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:41:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 02:41:59,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:59,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:59,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash -19130643, now seen corresponding path program 1 times [2020-10-14 02:41:59,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:59,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835590216] [2020-10-14 02:41:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:42:00,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:00,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-14 02:42:00,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:42:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:42:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:42:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:42:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 02:42:00,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:42:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:00,582 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 02:42:00,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835590216] [2020-10-14 02:42:00,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:42:00,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:42:00,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971192976] [2020-10-14 02:42:00,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:00,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:00,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:00,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:00,610 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 02:42:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:09,341 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:42:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:09,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-14 02:42:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:09,378 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:42:09,378 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:42:09,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:42:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:42:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:42:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:42:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-14 02:42:09,549 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 68 [2020-10-14 02:42:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:09,550 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-14 02:42:09,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-14 02:42:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 02:42:09,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:09,557 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, 2, 2, 2, 2, 2, 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] [2020-10-14 02:42:09,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:42:09,558 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:09,558 INFO L82 PathProgramCache]: Analyzing trace with hash 841767833, now seen corresponding path program 1 times [2020-10-14 02:42:09,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:09,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096915255] [2020-10-14 02:42:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:09,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:11,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:11,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 02:42:11,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:11,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-14 02:42:11,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:11,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 02:42:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:42:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:42:11,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:11,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:11,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:11,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:11,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:11,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:11,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:42:11,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 02:42:11,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:11,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:42:11,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:11,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096915255] [2020-10-14 02:42:11,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:11,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:11,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126867096] [2020-10-14 02:42:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:11,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:11,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:11,325 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 5 states. [2020-10-14 02:42:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:19,923 INFO L93 Difference]: Finished difference Result 4668 states and 8580 transitions. [2020-10-14 02:42:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:19,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-14 02:42:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:19,942 INFO L225 Difference]: With dead ends: 4668 [2020-10-14 02:42:19,942 INFO L226 Difference]: Without dead ends: 3121 [2020-10-14 02:42:19,947 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 02:42:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-14 02:42:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3106. [2020-10-14 02:42:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-14 02:42:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5300 transitions. [2020-10-14 02:42:20,036 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5300 transitions. Word has length 141 [2020-10-14 02:42:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:20,037 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 5300 transitions. [2020-10-14 02:42:20,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5300 transitions. [2020-10-14 02:42:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 02:42:20,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:20,041 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, 2, 2, 2, 2, 2, 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 02:42:20,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:42:20,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:20,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1542176651, now seen corresponding path program 1 times [2020-10-14 02:42:20,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:20,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433513442] [2020-10-14 02:42:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:42:21,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:42:21,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-14 02:42:21,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:42:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:42:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:21,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:21,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:42:21,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:42:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 02:42:21,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:42:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:21,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433513442] [2020-10-14 02:42:21,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:21,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:21,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792923194] [2020-10-14 02:42:21,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:21,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:21,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:21,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:21,368 INFO L87 Difference]: Start difference. First operand 3106 states and 5300 transitions. Second operand 5 states. [2020-10-14 02:42:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:30,714 INFO L93 Difference]: Finished difference Result 9330 states and 16146 transitions. [2020-10-14 02:42:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:30,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 02:42:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:30,756 INFO L225 Difference]: With dead ends: 9330 [2020-10-14 02:42:30,756 INFO L226 Difference]: Without dead ends: 6230 [2020-10-14 02:42:30,764 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 02:42:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2020-10-14 02:42:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6215. [2020-10-14 02:42:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-10-14 02:42:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 9299 transitions. [2020-10-14 02:42:30,940 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 9299 transitions. Word has length 143 [2020-10-14 02:42:30,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:30,946 INFO L479 AbstractCegarLoop]: Abstraction has 6215 states and 9299 transitions. [2020-10-14 02:42:30,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 9299 transitions. [2020-10-14 02:42:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 02:42:30,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:30,955 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, 2, 2, 2, 2, 2, 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] [2020-10-14 02:42:30,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:42:30,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:30,956 INFO L82 PathProgramCache]: Analyzing trace with hash 216457409, now seen corresponding path program 1 times [2020-10-14 02:42:30,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:30,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365833601] [2020-10-14 02:42:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:31,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:31,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 02:42:31,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-14 02:42:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:31,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:42:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:42:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:31,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:31,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:31,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:31,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:42:31,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:31,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:31,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:31,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:31,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:42:31,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:31,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:42:31,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:31,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:42:31,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:32,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365833601] [2020-10-14 02:42:32,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:32,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:32,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391902644] [2020-10-14 02:42:32,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:32,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:32,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:32,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:32,107 INFO L87 Difference]: Start difference. First operand 6215 states and 9299 transitions. Second operand 5 states. [2020-10-14 02:42:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:42,467 INFO L93 Difference]: Finished difference Result 18648 states and 28490 transitions. [2020-10-14 02:42:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:42,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 02:42:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:42,549 INFO L225 Difference]: With dead ends: 18648 [2020-10-14 02:42:42,549 INFO L226 Difference]: Without dead ends: 12439 [2020-10-14 02:42:42,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 02:42:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2020-10-14 02:42:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12435. [2020-10-14 02:42:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12435 states. [2020-10-14 02:42:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12435 states to 12435 states and 17281 transitions. [2020-10-14 02:42:42,921 INFO L78 Accepts]: Start accepts. Automaton has 12435 states and 17281 transitions. Word has length 153 [2020-10-14 02:42:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:42,921 INFO L479 AbstractCegarLoop]: Abstraction has 12435 states and 17281 transitions. [2020-10-14 02:42:42,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12435 states and 17281 transitions. [2020-10-14 02:42:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 02:42:42,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:42,930 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:42,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:42:42,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:42,932 INFO L82 PathProgramCache]: Analyzing trace with hash -83323367, now seen corresponding path program 1 times [2020-10-14 02:42:42,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:42,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151442476] [2020-10-14 02:42:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 02:42:45,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:42:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2435 [2020-10-14 02:42:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:42:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:42:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:45,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:45,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:45,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:45,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:42:45,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 02:42:45,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:42:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:42:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:42:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 02:42:45,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 02:42:45,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:42:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:42:46,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151442476] [2020-10-14 02:42:46,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:46,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:42:46,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634163811] [2020-10-14 02:42:46,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:42:46,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:46,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:42:46,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:42:46,038 INFO L87 Difference]: Start difference. First operand 12435 states and 17281 transitions. Second operand 7 states. [2020-10-14 02:43:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:04,554 INFO L93 Difference]: Finished difference Result 36003 states and 52243 transitions. [2020-10-14 02:43:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:43:04,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-14 02:43:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:04,649 INFO L225 Difference]: With dead ends: 36003 [2020-10-14 02:43:04,650 INFO L226 Difference]: Without dead ends: 23574 [2020-10-14 02:43:04,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:43:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23574 states. [2020-10-14 02:43:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23574 to 23534. [2020-10-14 02:43:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23534 states. [2020-10-14 02:43:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23534 states to 23534 states and 32517 transitions. [2020-10-14 02:43:05,416 INFO L78 Accepts]: Start accepts. Automaton has 23534 states and 32517 transitions. Word has length 252 [2020-10-14 02:43:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:05,417 INFO L479 AbstractCegarLoop]: Abstraction has 23534 states and 32517 transitions. [2020-10-14 02:43:05,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:43:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 23534 states and 32517 transitions. [2020-10-14 02:43:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 02:43:05,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:05,430 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:43:05,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:43:05,430 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1456792263, now seen corresponding path program 1 times [2020-10-14 02:43:05,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:05,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684330150] [2020-10-14 02:43:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:06,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:06,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 02:43:06,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:43:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-10-14 02:43:06,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:06,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 02:43:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 02:43:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:06,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:07,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:07,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:07,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:43:07,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:07,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:07,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:07,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:43:07,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:43:07,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:07,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:43:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 02:43:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:07,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 02:43:07,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 02:43:07,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:07,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:43:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:43:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:43:07,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684330150] [2020-10-14 02:43:07,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:07,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:43:07,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006606086] [2020-10-14 02:43:07,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:43:07,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:07,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:43:07,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:43:07,454 INFO L87 Difference]: Start difference. First operand 23534 states and 32517 transitions. Second operand 8 states. [2020-10-14 02:43:07,984 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-14 02:43:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:27,944 INFO L93 Difference]: Finished difference Result 68164 states and 104413 transitions. [2020-10-14 02:43:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:43:27,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-10-14 02:43:27,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:28,186 INFO L225 Difference]: With dead ends: 68164 [2020-10-14 02:43:28,186 INFO L226 Difference]: Without dead ends: 44640 [2020-10-14 02:43:28,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:43:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44640 states. [2020-10-14 02:43:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44640 to 44425. [2020-10-14 02:43:29,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44425 states. [2020-10-14 02:43:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44425 states to 44425 states and 61776 transitions. [2020-10-14 02:43:29,481 INFO L78 Accepts]: Start accepts. Automaton has 44425 states and 61776 transitions. Word has length 252 [2020-10-14 02:43:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:29,481 INFO L479 AbstractCegarLoop]: Abstraction has 44425 states and 61776 transitions. [2020-10-14 02:43:29,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:43:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 44425 states and 61776 transitions. [2020-10-14 02:43:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 02:43:29,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:29,505 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 02:43:29,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:43:29,505 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:29,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1617157637, now seen corresponding path program 1 times [2020-10-14 02:43:29,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:29,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120045106] [2020-10-14 02:43:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:29,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:32,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 02:43:32,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:43:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3349 [2020-10-14 02:43:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:32,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:43:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:43:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:43:32,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:32,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:33,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:33,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:43:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:43:33,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:33,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:43:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:43:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:33,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:33,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 02:43:33,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 02:43:33,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:33,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:43:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:43:33,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:43:33,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120045106] [2020-10-14 02:43:33,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:33,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:43:33,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123683608] [2020-10-14 02:43:33,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:43:33,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:33,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:43:33,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:43:33,401 INFO L87 Difference]: Start difference. First operand 44425 states and 61776 transitions. Second operand 7 states. [2020-10-14 02:43:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:52,722 INFO L93 Difference]: Finished difference Result 89287 states and 126706 transitions. [2020-10-14 02:43:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:43:52,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 02:43:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:52,915 INFO L225 Difference]: With dead ends: 89287 [2020-10-14 02:43:52,915 INFO L226 Difference]: Without dead ends: 45635 [2020-10-14 02:43:53,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:43:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45635 states. [2020-10-14 02:43:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45635 to 42213. [2020-10-14 02:43:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42213 states. [2020-10-14 02:43:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42213 states to 42213 states and 53841 transitions. [2020-10-14 02:43:54,029 INFO L78 Accepts]: Start accepts. Automaton has 42213 states and 53841 transitions. Word has length 258 [2020-10-14 02:43:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:54,029 INFO L479 AbstractCegarLoop]: Abstraction has 42213 states and 53841 transitions. [2020-10-14 02:43:54,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:43:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 42213 states and 53841 transitions. [2020-10-14 02:43:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 02:43:54,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:54,049 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:54,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:43:54,050 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:54,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1655940296, now seen corresponding path program 1 times [2020-10-14 02:43:54,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:54,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845543515] [2020-10-14 02:43:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:55,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:56,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:56,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 02:43:56,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:43:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2388 [2020-10-14 02:43:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:56,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:43:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 02:43:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:56,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:56,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:56,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:56,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:43:56,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:56,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:56,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:56,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:56,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:56,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:43:56,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:43:56,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:56,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:43:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:43:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:57,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:57,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:43:57,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:57,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 02:43:57,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:57,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:43:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 02:43:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:43:57,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845543515] [2020-10-14 02:43:57,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:57,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:43:57,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478227124] [2020-10-14 02:43:57,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:43:57,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:57,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:43:57,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:43:57,241 INFO L87 Difference]: Start difference. First operand 42213 states and 53841 transitions. Second operand 7 states. [2020-10-14 02:44:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:20,278 INFO L93 Difference]: Finished difference Result 91811 states and 127347 transitions. [2020-10-14 02:44:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:44:20,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 02:44:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:20,611 INFO L225 Difference]: With dead ends: 91811 [2020-10-14 02:44:20,612 INFO L226 Difference]: Without dead ends: 51127 [2020-10-14 02:44:20,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:44:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51127 states. [2020-10-14 02:44:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51127 to 50201. [2020-10-14 02:44:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50201 states. [2020-10-14 02:44:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50201 states to 50201 states and 64573 transitions. [2020-10-14 02:44:22,060 INFO L78 Accepts]: Start accepts. Automaton has 50201 states and 64573 transitions. Word has length 263 [2020-10-14 02:44:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:22,061 INFO L479 AbstractCegarLoop]: Abstraction has 50201 states and 64573 transitions. [2020-10-14 02:44:22,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:44:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 50201 states and 64573 transitions. [2020-10-14 02:44:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-14 02:44:22,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:22,081 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:22,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:44:22,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash -427381487, now seen corresponding path program 1 times [2020-10-14 02:44:22,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:22,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124869013] [2020-10-14 02:44:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:25,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:25,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 02:44:25,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:44:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3470 [2020-10-14 02:44:25,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:25,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 02:44:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 02:44:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:44:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:25,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:25,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:25,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:25,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:25,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:25,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:25,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 02:44:25,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 02:44:25,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:25,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:44:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 02:44:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:25,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:26,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:26,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 02:44:26,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 02:44:26,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:26,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:44:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:44:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:44:26,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124869013] [2020-10-14 02:44:26,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:26,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:44:26,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740511686] [2020-10-14 02:44:26,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:44:26,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:26,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:44:26,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:44:26,243 INFO L87 Difference]: Start difference. First operand 50201 states and 64573 transitions. Second operand 7 states. [2020-10-14 02:44:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:44,128 INFO L93 Difference]: Finished difference Result 98917 states and 127128 transitions. [2020-10-14 02:44:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:44:44,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-14 02:44:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:44,350 INFO L225 Difference]: With dead ends: 98917 [2020-10-14 02:44:44,351 INFO L226 Difference]: Without dead ends: 49489 [2020-10-14 02:44:44,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:44:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49489 states. [2020-10-14 02:44:45,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49489 to 49312. [2020-10-14 02:44:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49312 states. [2020-10-14 02:44:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49312 states to 49312 states and 58959 transitions. [2020-10-14 02:44:45,473 INFO L78 Accepts]: Start accepts. Automaton has 49312 states and 58959 transitions. Word has length 264 [2020-10-14 02:44:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:45,474 INFO L479 AbstractCegarLoop]: Abstraction has 49312 states and 58959 transitions. [2020-10-14 02:44:45,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:44:45,474 INFO L276 IsEmpty]: Start isEmpty. Operand 49312 states and 58959 transitions. [2020-10-14 02:44:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 02:44:45,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:45,490 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:45,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:44:45,491 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:45,492 INFO L82 PathProgramCache]: Analyzing trace with hash -358739335, now seen corresponding path program 1 times [2020-10-14 02:44:45,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:45,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214472198] [2020-10-14 02:44:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 02:44:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:44:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 02:44:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:50,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:44:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 02:44:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:50,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:50,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:50,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:50,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:50,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:44:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:50,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:50,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:44:50,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:44:50,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:50,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:44:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:44:50,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:44:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:51,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:51,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:44:51,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 02:44:51,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:51,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:44:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 02:44:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:44:51,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214472198] [2020-10-14 02:44:51,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:51,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:44:51,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533639102] [2020-10-14 02:44:51,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:44:51,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:51,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:44:51,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:44:51,191 INFO L87 Difference]: Start difference. First operand 49312 states and 58959 transitions. Second operand 7 states. [2020-10-14 02:45:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:22,952 INFO L93 Difference]: Finished difference Result 107549 states and 128881 transitions. [2020-10-14 02:45:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:45:22,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-14 02:45:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:23,186 INFO L225 Difference]: With dead ends: 107549 [2020-10-14 02:45:23,187 INFO L226 Difference]: Without dead ends: 59010 [2020-10-14 02:45:23,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:45:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59010 states. [2020-10-14 02:45:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59010 to 55820. [2020-10-14 02:45:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55820 states. [2020-10-14 02:45:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55820 states to 55820 states and 65109 transitions. [2020-10-14 02:45:24,284 INFO L78 Accepts]: Start accepts. Automaton has 55820 states and 65109 transitions. Word has length 280 [2020-10-14 02:45:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:24,285 INFO L479 AbstractCegarLoop]: Abstraction has 55820 states and 65109 transitions. [2020-10-14 02:45:24,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:45:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 55820 states and 65109 transitions. [2020-10-14 02:45:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 02:45:24,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:24,296 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:24,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:45:24,296 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:24,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1400963292, now seen corresponding path program 1 times [2020-10-14 02:45:24,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:24,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015626292] [2020-10-14 02:45:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:26,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:26,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-14 02:45:26,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:45:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2078 [2020-10-14 02:45:26,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:26,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 02:45:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 02:45:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:26,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:26,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:26,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:45:26,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:26,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:26,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:26,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:26,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:45:26,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 02:45:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:26,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:45:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 02:45:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 02:45:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 02:45:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:26,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:45:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015626292] [2020-10-14 02:45:27,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:27,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:27,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495110091] [2020-10-14 02:45:27,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:27,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:27,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:27,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:27,346 INFO L87 Difference]: Start difference. First operand 55820 states and 65109 transitions. Second operand 7 states.