/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:15:23,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:15:23,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:15:23,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:15:23,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:15:23,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:15:23,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:15:23,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:15:23,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:15:23,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:15:23,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:15:23,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:15:23,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:15:23,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:15:23,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:15:23,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:15:23,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:15:23,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:15:23,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:15:23,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:15:23,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:15:23,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:15:23,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:15:23,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:15:23,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:15:23,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:15:23,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:15:23,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:15:23,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:15:23,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:15:23,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:15:23,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:15:23,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:15:23,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:15:23,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:15:23,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:15:23,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:15:23,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:15:23,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:15:23,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:15:23,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:15:23,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:15:23,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:15:23,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:15:23,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:15:23,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:15:23,840 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:15:23,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:15:23,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:15:23,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:15:23,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:15:23,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:15:23,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:15:23,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:15:23,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:15:23,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:15:23,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:15:23,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:15:23,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:15:23,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:15:23,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:15:23,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:15:23,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:15:23,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:15:23,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:15:23,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:15:23,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:15:23,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:15:23,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:15:23,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:15:23,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:15:23,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:15:24,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:15:24,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:15:24,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:15:24,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:15:24,168 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:15:24,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-14 21:15:24,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13069a386/5db43e9dd63a4d7fa823cf6515eadcbe/FLAGfc79f5c62 [2020-10-14 21:15:25,032 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:15:25,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-14 21:15:25,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13069a386/5db43e9dd63a4d7fa823cf6515eadcbe/FLAGfc79f5c62 [2020-10-14 21:15:25,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13069a386/5db43e9dd63a4d7fa823cf6515eadcbe [2020-10-14 21:15:25,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:15:25,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:15:25,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:15:25,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:15:25,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:15:25,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:25" (1/1) ... [2020-10-14 21:15:25,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41238cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:25, skipping insertion in model container [2020-10-14 21:15:25,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:25" (1/1) ... [2020-10-14 21:15:25,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:15:25,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:15:27,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:15:27,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:15:28,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:15:28,043 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:15:28,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28 WrapperNode [2020-10-14 21:15:28,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:15:28,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:15:28,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:15:28,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:15:28,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... [2020-10-14 21:15:28,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... [2020-10-14 21:15:28,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... [2020-10-14 21:15:28,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... [2020-10-14 21:15:28,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... [2020-10-14 21:15:28,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... [2020-10-14 21:15:28,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... [2020-10-14 21:15:28,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:15:28,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:15:28,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:15:28,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:15:28,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:15:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:15:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:15:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:15:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:15:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:15:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:15:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:15:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:15:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:15:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:15:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:15:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:15:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:15:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:15:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:15:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:15:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:15:33,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:15:33,471 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:15:33,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:33 BoogieIcfgContainer [2020-10-14 21:15:33,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:15:33,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:15:33,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:15:33,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:15:33,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:15:25" (1/3) ... [2020-10-14 21:15:33,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a4a0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:33, skipping insertion in model container [2020-10-14 21:15:33,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:28" (2/3) ... [2020-10-14 21:15:33,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a4a0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:33, skipping insertion in model container [2020-10-14 21:15:33,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:33" (3/3) ... [2020-10-14 21:15:33,493 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label40.c [2020-10-14 21:15:33,503 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:15:33,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:15:33,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:15:33,560 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:15:33,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:15:33,561 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:15:33,561 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:15:33,561 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:15:33,561 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:15:33,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:15:33,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:15:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:15:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 21:15:33,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:33,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:33,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:33,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1787696750, now seen corresponding path program 1 times [2020-10-14 21:15:33,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:33,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935117715] [2020-10-14 21:15:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:34,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:34,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 21:15:34,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-14 21:15:34,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:34,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 21:15:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:15:34,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:34,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:34,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:34,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:34,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:15:34,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:34,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:34,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935117715] [2020-10-14 21:15:34,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:34,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:15:34,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344777631] [2020-10-14 21:15:34,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:15:34,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:15:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:15:34,331 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:15:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:45,925 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:15:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:15:45,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 21:15:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:45,973 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:15:45,973 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:15:45,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:15:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:15:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:15:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:15:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 21:15:46,179 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 15 [2020-10-14 21:15:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:46,180 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 21:15:46,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:15:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 21:15:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 21:15:46,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:46,185 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:15:46,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:15:46,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:46,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:46,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1418122443, now seen corresponding path program 1 times [2020-10-14 21:15:46,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:46,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960255360] [2020-10-14 21:15:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:46,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:46,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:46,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:15:46,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:46,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-14 21:15:46,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:46,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:15:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:15:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:47,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:47,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:47,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:15:47,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:47,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:47,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:47,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 21:15:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:47,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:15:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:15:47,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960255360] [2020-10-14 21:15:47,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:47,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:15:47,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559129781] [2020-10-14 21:15:47,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:15:47,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:47,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:15:47,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:15:47,341 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-14 21:15:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:58,747 INFO L93 Difference]: Finished difference Result 4690 states and 7651 transitions. [2020-10-14 21:15:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:15:58,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-14 21:15:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:58,773 INFO L225 Difference]: With dead ends: 4690 [2020-10-14 21:15:58,774 INFO L226 Difference]: Without dead ends: 3143 [2020-10-14 21:15:58,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:15:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-14 21:15:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3125. [2020-10-14 21:15:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-14 21:15:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4443 transitions. [2020-10-14 21:15:58,904 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4443 transitions. Word has length 90 [2020-10-14 21:15:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:58,905 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 4443 transitions. [2020-10-14 21:15:58,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:15:58,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4443 transitions. [2020-10-14 21:15:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 21:15:58,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:58,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:58,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:15:58,913 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:58,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1549682797, now seen corresponding path program 1 times [2020-10-14 21:15:58,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:58,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644912079] [2020-10-14 21:15:58,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:59,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:00,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:00,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:16:00,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-14 21:16:00,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:00,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:00,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:16:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:00,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:00,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:00,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:00,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 21:16:00,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:00,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:00,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:00,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:16:00,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 21:16:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:00,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:16:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:16:00,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644912079] [2020-10-14 21:16:00,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:16:00,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:16:00,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852174724] [2020-10-14 21:16:00,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:00,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:00,606 INFO L87 Difference]: Start difference. First operand 3125 states and 4443 transitions. Second operand 7 states. [2020-10-14 21:16:16,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:16,326 INFO L93 Difference]: Finished difference Result 9573 states and 13790 transitions. [2020-10-14 21:16:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:16:16,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-14 21:16:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:16,370 INFO L225 Difference]: With dead ends: 9573 [2020-10-14 21:16:16,371 INFO L226 Difference]: Without dead ends: 6454 [2020-10-14 21:16:16,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2020-10-14 21:16:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 6346. [2020-10-14 21:16:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6346 states. [2020-10-14 21:16:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 8496 transitions. [2020-10-14 21:16:16,620 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 8496 transitions. Word has length 94 [2020-10-14 21:16:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:16,621 INFO L479 AbstractCegarLoop]: Abstraction has 6346 states and 8496 transitions. [2020-10-14 21:16:16,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 8496 transitions. [2020-10-14 21:16:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 21:16:16,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:16,636 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:16:16,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:16:16,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:16,641 INFO L82 PathProgramCache]: Analyzing trace with hash -155364553, now seen corresponding path program 1 times [2020-10-14 21:16:16,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:16,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605032079] [2020-10-14 21:16:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:16,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:18,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:18,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:16:18,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-10-14 21:16:18,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:18,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:16:18,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:18,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:18,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:18,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:16:18,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:18,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:18,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:18,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:16:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 21:16:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:18,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:16:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:16:18,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605032079] [2020-10-14 21:16:18,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:16:18,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:16:18,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854287991] [2020-10-14 21:16:18,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:18,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:18,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:18,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:18,920 INFO L87 Difference]: Start difference. First operand 6346 states and 8496 transitions. Second operand 7 states. [2020-10-14 21:16:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:35,701 INFO L93 Difference]: Finished difference Result 19511 states and 26949 transitions. [2020-10-14 21:16:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:16:35,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-14 21:16:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:35,785 INFO L225 Difference]: With dead ends: 19511 [2020-10-14 21:16:35,786 INFO L226 Difference]: Without dead ends: 13171 [2020-10-14 21:16:35,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13171 states. [2020-10-14 21:16:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13171 to 13004. [2020-10-14 21:16:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13004 states. [2020-10-14 21:16:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 17198 transitions. [2020-10-14 21:16:36,233 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 17198 transitions. Word has length 128 [2020-10-14 21:16:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:36,235 INFO L479 AbstractCegarLoop]: Abstraction has 13004 states and 17198 transitions. [2020-10-14 21:16:36,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 17198 transitions. [2020-10-14 21:16:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 21:16:36,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:36,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:36,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:16:36,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash 521327887, now seen corresponding path program 1 times [2020-10-14 21:16:36,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:36,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488921213] [2020-10-14 21:16:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:37,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 21:16:37,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:16:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-10-14 21:16:37,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:37,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:16:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:16:37,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:37,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:37,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:37,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:16:37,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:37,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:37,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:37,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:16:37,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:16:37,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:37,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:16:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:16:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:37,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:38,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:38,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:16:38,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 21:16:38,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:38,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:16:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:16:38,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488921213] [2020-10-14 21:16:38,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:38,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:16:38,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054337935] [2020-10-14 21:16:38,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:16:38,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:38,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:16:38,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:38,371 INFO L87 Difference]: Start difference. First operand 13004 states and 17198 transitions. Second operand 8 states. [2020-10-14 21:17:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:06,123 INFO L93 Difference]: Finished difference Result 34780 states and 51387 transitions. [2020-10-14 21:17:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:17:06,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-10-14 21:17:06,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:06,236 INFO L225 Difference]: With dead ends: 34780 [2020-10-14 21:17:06,237 INFO L226 Difference]: Without dead ends: 17739 [2020-10-14 21:17:06,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:17:06,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17739 states. [2020-10-14 21:17:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17739 to 17334. [2020-10-14 21:17:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17334 states. [2020-10-14 21:17:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17334 states to 17334 states and 22973 transitions. [2020-10-14 21:17:06,912 INFO L78 Accepts]: Start accepts. Automaton has 17334 states and 22973 transitions. Word has length 190 [2020-10-14 21:17:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:06,913 INFO L479 AbstractCegarLoop]: Abstraction has 17334 states and 22973 transitions. [2020-10-14 21:17:06,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:17:06,913 INFO L276 IsEmpty]: Start isEmpty. Operand 17334 states and 22973 transitions. [2020-10-14 21:17:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 21:17:06,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:06,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:17:06,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:17:06,918 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:06,919 INFO L82 PathProgramCache]: Analyzing trace with hash 789833282, now seen corresponding path program 1 times [2020-10-14 21:17:06,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:06,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7942633] [2020-10-14 21:17:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:07,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:07,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:07,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 21:17:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-14 21:17:07,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:07,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:17:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:17:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:08,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:08,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:08,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:17:08,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:08,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:08,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:08,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:08,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:17:08,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 21:17:08,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:08,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:08,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:08,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:08,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:17:08,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:17:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:08,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:08,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:17:08,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 21:17:08,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:08,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:17:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:17:08,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7942633] [2020-10-14 21:17:08,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:08,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:17:08,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436349908] [2020-10-14 21:17:08,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:17:08,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:08,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:17:08,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:17:08,751 INFO L87 Difference]: Start difference. First operand 17334 states and 22973 transitions. Second operand 7 states. [2020-10-14 21:17:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:31,557 INFO L93 Difference]: Finished difference Result 42266 states and 58377 transitions. [2020-10-14 21:17:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:17:31,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-14 21:17:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:31,671 INFO L225 Difference]: With dead ends: 42266 [2020-10-14 21:17:31,672 INFO L226 Difference]: Without dead ends: 25705 [2020-10-14 21:17:31,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:17:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25705 states. [2020-10-14 21:17:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25705 to 25605. [2020-10-14 21:17:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25605 states. [2020-10-14 21:17:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25605 states to 25605 states and 34202 transitions. [2020-10-14 21:17:33,366 INFO L78 Accepts]: Start accepts. Automaton has 25605 states and 34202 transitions. Word has length 249 [2020-10-14 21:17:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:33,367 INFO L479 AbstractCegarLoop]: Abstraction has 25605 states and 34202 transitions. [2020-10-14 21:17:33,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25605 states and 34202 transitions. [2020-10-14 21:17:33,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 21:17:33,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:33,373 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:17:33,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:17:33,374 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:33,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:33,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2111317114, now seen corresponding path program 1 times [2020-10-14 21:17:33,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:33,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114423119] [2020-10-14 21:17:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:34,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 21:17:34,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:17:34,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-10-14 21:17:34,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:34,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:17:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:17:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:35,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:35,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:35,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:35,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:17:35,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:35,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:35,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:17:35,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:17:35,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:35,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:17:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:35,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:17:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:35,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:35,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:17:35,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 21:17:35,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:35,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:17:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:17:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:17:35,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114423119] [2020-10-14 21:17:35,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:35,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:17:35,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981444007] [2020-10-14 21:17:35,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:17:35,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:35,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:17:35,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:17:35,841 INFO L87 Difference]: Start difference. First operand 25605 states and 34202 transitions. Second operand 7 states. [2020-10-14 21:18:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:10,458 INFO L93 Difference]: Finished difference Result 73600 states and 107321 transitions. [2020-10-14 21:18:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:18:10,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-14 21:18:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:10,770 INFO L225 Difference]: With dead ends: 73600 [2020-10-14 21:18:10,770 INFO L226 Difference]: Without dead ends: 48768 [2020-10-14 21:18:10,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:18:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48768 states. [2020-10-14 21:18:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48768 to 48191. [2020-10-14 21:18:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48191 states. [2020-10-14 21:18:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48191 states to 48191 states and 61770 transitions. [2020-10-14 21:18:12,018 INFO L78 Accepts]: Start accepts. Automaton has 48191 states and 61770 transitions. Word has length 253 [2020-10-14 21:18:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:12,019 INFO L479 AbstractCegarLoop]: Abstraction has 48191 states and 61770 transitions. [2020-10-14 21:18:12,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 48191 states and 61770 transitions. [2020-10-14 21:18:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 21:18:12,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:12,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:18:12,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:18:12,025 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1923301903, now seen corresponding path program 1 times [2020-10-14 21:18:12,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:12,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468966741] [2020-10-14 21:18:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:12,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:16,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:16,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 21:18:16,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:18:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4407 [2020-10-14 21:18:16,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:16,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:18:16,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:16,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:16,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:16,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:18:16,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:16,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:16,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:17,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:17,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:18:17,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 21:18:17,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:17,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:18:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:17,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:18:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:18:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 21:18:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:17,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 21:18:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:18:17,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468966741] [2020-10-14 21:18:17,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:17,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:18:17,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843311199] [2020-10-14 21:18:17,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:17,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:17,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:17,806 INFO L87 Difference]: Start difference. First operand 48191 states and 61770 transitions. Second operand 7 states. [2020-10-14 21:18:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:39,143 INFO L93 Difference]: Finished difference Result 102167 states and 132386 transitions. [2020-10-14 21:18:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:18:39,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 21:18:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:39,335 INFO L225 Difference]: With dead ends: 102167 [2020-10-14 21:18:39,336 INFO L226 Difference]: Without dead ends: 54749 [2020-10-14 21:18:39,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:18:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54749 states. [2020-10-14 21:18:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54749 to 53786. [2020-10-14 21:18:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53786 states. [2020-10-14 21:18:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53786 states to 53786 states and 67967 transitions. [2020-10-14 21:18:40,475 INFO L78 Accepts]: Start accepts. Automaton has 53786 states and 67967 transitions. Word has length 258 [2020-10-14 21:18:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:40,475 INFO L479 AbstractCegarLoop]: Abstraction has 53786 states and 67967 transitions. [2020-10-14 21:18:40,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 53786 states and 67967 transitions. [2020-10-14 21:18:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 21:18:40,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:40,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:18:40,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:18:40,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash -384292674, now seen corresponding path program 1 times [2020-10-14 21:18:40,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:40,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87708289] [2020-10-14 21:18:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:42,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:42,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:18:42,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-14 21:18:42,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:42,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:42,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:18:42,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 21:18:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:18:42,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:42,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:18:42,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:42,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:18:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 21:18:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:42,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:18:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:42,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:42,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:18:42,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 21:18:42,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:42,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:18:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:18:42,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87708289] [2020-10-14 21:18:42,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:42,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:18:42,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139451106] [2020-10-14 21:18:42,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:18:42,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:18:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:18:42,896 INFO L87 Difference]: Start difference. First operand 53786 states and 67967 transitions. Second operand 5 states. [2020-10-14 21:18:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:58,723 INFO L93 Difference]: Finished difference Result 123939 states and 160170 transitions. [2020-10-14 21:18:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:18:58,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-14 21:18:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:58,908 INFO L225 Difference]: With dead ends: 123939 [2020-10-14 21:18:58,908 INFO L226 Difference]: Without dead ends: 70159 [2020-10-14 21:18:58,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:18:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70159 states. [2020-10-14 21:19:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70159 to 69358. [2020-10-14 21:19:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69358 states. [2020-10-14 21:19:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69358 states to 69358 states and 86939 transitions. [2020-10-14 21:19:00,355 INFO L78 Accepts]: Start accepts. Automaton has 69358 states and 86939 transitions. Word has length 263 [2020-10-14 21:19:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:00,356 INFO L479 AbstractCegarLoop]: Abstraction has 69358 states and 86939 transitions. [2020-10-14 21:19:00,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:19:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 69358 states and 86939 transitions. [2020-10-14 21:19:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-14 21:19:00,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:00,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:19:00,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:19:00,370 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:00,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1261739625, now seen corresponding path program 1 times [2020-10-14 21:19:00,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:00,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818733220] [2020-10-14 21:19:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:03,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:03,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-14 21:19:03,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:19:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3187 [2020-10-14 21:19:03,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:03,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:19:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:19:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-14 21:19:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:19:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:03,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:03,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:19:03,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:03,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:19:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:03,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:04,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:04,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:04,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:19:04,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 21:19:04,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:04,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:19:04,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:19:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:19:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 21:19:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:04,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:19:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:19:05,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818733220] [2020-10-14 21:19:05,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:05,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:19:05,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585730125] [2020-10-14 21:19:05,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:05,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:05,403 INFO L87 Difference]: Start difference. First operand 69358 states and 86939 transitions. Second operand 7 states.