/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 SingleStatement --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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:50,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:50,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:50,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:50,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:50,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:50,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:50,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:50,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:50,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:50,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:50,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:50,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:50,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:50,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:50,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:50,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:50,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:50,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:50,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:50,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:50,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:50,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:50,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:50,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:50,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:50,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:50,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:50,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:50,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:51:50,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:51:50,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:51:50,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:51:50,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:51:50,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:51:50,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:51:50,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:51:50,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:51:50,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:50,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:50,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:50,748 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 [2020-09-25 07:51:50,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:50,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:50,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:50,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:50,794 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:50,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:50,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:50,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:50,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:50,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:50,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:50,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:50,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:50,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:50,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:50,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:50,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:50,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:50,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:50,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:50,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:50,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:50,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:50,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:50,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:50,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:50,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:50,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:50,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:50,799 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 -> SingleStatement 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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=true; [2020-09-25 07:51:51,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:51,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:51,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:51,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:51,307 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:51,308 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 07:51:51,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49cf5a0e/a33c677f92b64f17ad5d53cde2d4e598/FLAGf1d2c6280 [2020-09-25 07:51:52,066 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:52,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 07:51:52,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49cf5a0e/a33c677f92b64f17ad5d53cde2d4e598/FLAGf1d2c6280 [2020-09-25 07:51:52,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49cf5a0e/a33c677f92b64f17ad5d53cde2d4e598 [2020-09-25 07:51:52,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:52,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:52,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:52,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:52,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:52,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52, skipping insertion in model container [2020-09-25 07:51:52,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:52,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:52,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:52,894 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:53,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:53,107 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:53,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53 WrapperNode [2020-09-25 07:51:53,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:53,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:53,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:53,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:53,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (1/1) ... [2020-09-25 07:51:53,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (1/1) ... [2020-09-25 07:51:53,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (1/1) ... [2020-09-25 07:51:53,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (1/1) ... [2020-09-25 07:51:53,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (1/1) ... [2020-09-25 07:51:53,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (1/1) ... [2020-09-25 07:51:53,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (1/1) ... [2020-09-25 07:51:53,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:53,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:53,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:53,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:53,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (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 [2020-09-25 07:51:53,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:54,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:54,809 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:54,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:54 BoogieIcfgContainer [2020-09-25 07:51:54,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:54,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:54,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:54,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:54,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:52" (1/3) ... [2020-09-25 07:51:54,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:54, skipping insertion in model container [2020-09-25 07:51:54,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:53" (2/3) ... [2020-09-25 07:51:54,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:54, skipping insertion in model container [2020-09-25 07:51:54,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:54" (3/3) ... [2020-09-25 07:51:54,828 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-09-25 07:51:54,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:54,853 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:54,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:54,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:54,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:54,915 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:54,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:54,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:54,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:54,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:54,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 07:51:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:54,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:54,980 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:54,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1333625535, now seen corresponding path program 1 times [2020-09-25 07:51:55,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:55,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 07:51:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:00,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 07:52:00,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:00,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:52:00,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:00,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:52:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:52:00,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:00,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:52:00,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:00,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:00,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 07:52:00,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:00,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:00,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842184338] [2020-09-25 07:52:00,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:00,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:00,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:00,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:00,667 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:52:02,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:02,835 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 07:52:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:02,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-09-25 07:52:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:02,878 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 07:52:02,879 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 07:52:02,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 07:52:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 07:52:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 07:52:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 07:52:03,056 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 156 [2020-09-25 07:52:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:03,058 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 07:52:03,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 07:52:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 07:52:03,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:03,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:03,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:03,067 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1479520420, now seen corresponding path program 1 times [2020-09-25 07:52:03,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:03,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203441240] [2020-09-25 07:52:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:03,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 07:52:08,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:52:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:08,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:52:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 07:52:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:08,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:08,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:52:08,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:08,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:08,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:52:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:52:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:08,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:52:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:08,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203441240] [2020-09-25 07:52:08,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:08,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:08,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248240093] [2020-09-25 07:52:08,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:08,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:08,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:08,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:08,389 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 07:52:10,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:10,329 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 07:52:10,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:10,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 07:52:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:10,340 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 07:52:10,341 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 07:52:10,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 07:52:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 07:52:10,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 07:52:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 07:52:10,390 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 173 [2020-09-25 07:52:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:10,392 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 07:52:10,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 07:52:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 07:52:10,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:10,402 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:10,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:10,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:10,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:10,403 INFO L82 PathProgramCache]: Analyzing trace with hash -420325430, now seen corresponding path program 1 times [2020-09-25 07:52:10,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:10,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426049267] [2020-09-25 07:52:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 07:52:15,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:52:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:52:15,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:52:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:52:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:52:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:52:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:15,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:52:15,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:52:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:52:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:52:15,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 07:52:15,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:52:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:15,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426049267] [2020-09-25 07:52:15,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:15,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:15,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990862141] [2020-09-25 07:52:15,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:15,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:15,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:15,931 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 07:52:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:18,153 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 07:52:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:18,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-09-25 07:52:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:18,168 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 07:52:18,168 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 07:52:18,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 07:52:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 07:52:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 07:52:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 07:52:18,219 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 218 [2020-09-25 07:52:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:18,220 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 07:52:18,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 07:52:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 07:52:18,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:18,227 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:18,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:18,227 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:18,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1776606615, now seen corresponding path program 1 times [2020-09-25 07:52:18,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:18,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614951598] [2020-09-25 07:52:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:18,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 07:52:23,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:23,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:52:23,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:52:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 07:52:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:52:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:23,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:52:23,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:52:23,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:52:23,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:52:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:52:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:52:23,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 07:52:23,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:52:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:23,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614951598] [2020-09-25 07:52:23,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:23,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:52:23,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804245548] [2020-09-25 07:52:23,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:52:23,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:23,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:52:23,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:52:23,782 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-25 07:52:24,538 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 07:52:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:27,275 INFO L93 Difference]: Finished difference Result 2883 states and 3642 transitions. [2020-09-25 07:52:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:52:27,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 07:52:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:27,289 INFO L225 Difference]: With dead ends: 2883 [2020-09-25 07:52:27,290 INFO L226 Difference]: Without dead ends: 1830 [2020-09-25 07:52:27,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:52:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-09-25 07:52:27,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1706. [2020-09-25 07:52:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-09-25 07:52:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2090 transitions. [2020-09-25 07:52:27,372 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2090 transitions. Word has length 225 [2020-09-25 07:52:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:27,372 INFO L479 AbstractCegarLoop]: Abstraction has 1706 states and 2090 transitions. [2020-09-25 07:52:27,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:52:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2090 transitions. [2020-09-25 07:52:27,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 07:52:27,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:27,383 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:27,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:27,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1031297254, now seen corresponding path program 1 times [2020-09-25 07:52:27,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:27,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251945791] [2020-09-25 07:52:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 07:52:32,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:52:32,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 07:52:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:52:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:52:32,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:52:32,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:52:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:52:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 07:52:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 07:52:32,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:52:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 07:52:32,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251945791] [2020-09-25 07:52:32,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:32,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:32,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193733671] [2020-09-25 07:52:32,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:32,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:32,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:32,833 INFO L87 Difference]: Start difference. First operand 1706 states and 2090 transitions. Second operand 5 states. [2020-09-25 07:52:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:34,729 INFO L93 Difference]: Finished difference Result 3970 states and 4895 transitions. [2020-09-25 07:52:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:34,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-09-25 07:52:34,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:34,738 INFO L225 Difference]: With dead ends: 3970 [2020-09-25 07:52:34,738 INFO L226 Difference]: Without dead ends: 1637 [2020-09-25 07:52:34,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-09-25 07:52:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1627. [2020-09-25 07:52:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-09-25 07:52:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 1965 transitions. [2020-09-25 07:52:34,795 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 1965 transitions. Word has length 240 [2020-09-25 07:52:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:34,796 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 1965 transitions. [2020-09-25 07:52:34,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 1965 transitions. [2020-09-25 07:52:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 07:52:34,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:34,805 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:34,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:34,806 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:34,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1508954734, now seen corresponding path program 1 times [2020-09-25 07:52:34,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:34,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237327355] [2020-09-25 07:52:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 07:52:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 07:52:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:52:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 07:52:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-09-25 07:52:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:40,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:52:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:52:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:40,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:52:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:52:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:40,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:52:40,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:52:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 07:52:40,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:40,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:52:40,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 07:52:40,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237327355] [2020-09-25 07:52:40,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:40,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:40,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474137810] [2020-09-25 07:52:40,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:40,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:40,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:40,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:40,269 INFO L87 Difference]: Start difference. First operand 1627 states and 1965 transitions. Second operand 5 states. [2020-09-25 07:52:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:42,183 INFO L93 Difference]: Finished difference Result 3677 states and 4462 transitions. [2020-09-25 07:52:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:42,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-09-25 07:52:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:42,195 INFO L225 Difference]: With dead ends: 3677 [2020-09-25 07:52:42,196 INFO L226 Difference]: Without dead ends: 2074 [2020-09-25 07:52:42,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2020-09-25 07:52:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1913. [2020-09-25 07:52:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-09-25 07:52:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2199 transitions. [2020-09-25 07:52:42,279 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2199 transitions. Word has length 242 [2020-09-25 07:52:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:42,280 INFO L479 AbstractCegarLoop]: Abstraction has 1913 states and 2199 transitions. [2020-09-25 07:52:42,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2199 transitions. [2020-09-25 07:52:42,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 07:52:42,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:42,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:42,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:52:42,295 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:42,296 INFO L82 PathProgramCache]: Analyzing trace with hash -828806245, now seen corresponding path program 1 times [2020-09-25 07:52:42,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:42,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455160395] [2020-09-25 07:52:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking...