/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=BIGGEST --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/Problem06_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:11:50,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:11:50,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:11:50,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:11:50,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:11:50,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:11:50,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:11:50,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:11:50,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:11:50,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:11:50,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:11:50,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:11:50,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:11:50,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:11:50,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:11:50,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:11:50,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:11:50,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:11:50,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:11:50,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:11:50,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:11:50,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:11:50,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:11:50,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:11:50,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:11:50,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:11:50,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:11:50,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:11:50,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:11:50,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:11:50,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:11:50,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:11:50,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:11:50,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:11:50,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:11:50,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:11:50,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:11:50,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:11:50,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:11:50,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:11:50,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:11:50,736 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 [2020-10-12 12:11:50,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:11:50,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:11:50,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:11:50,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:11:50,772 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:11:50,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:11:50,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:11:50,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:11:50,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:11:50,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:11:50,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:11:50,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:11:50,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:11:50,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:11:50,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:11:50,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:11:50,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:11:50,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:11:50,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:11:50,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:11:50,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:11:50,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:11:50,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:11:50,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:11:50,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:11:50,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:11:50,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:11:50,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:11:50,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:11:50,779 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 12:11:51,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:11:51,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:11:51,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:11:51,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:11:51,107 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:11:51,108 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-12 12:11:51,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a253b65cb/c5afb16cab8b490f9c8ff94f418dca40/FLAGc3438af6d [2020-10-12 12:11:52,021 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:11:52,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-12 12:11:52,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a253b65cb/c5afb16cab8b490f9c8ff94f418dca40/FLAGc3438af6d [2020-10-12 12:11:52,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a253b65cb/c5afb16cab8b490f9c8ff94f418dca40 [2020-10-12 12:11:52,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:11:52,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:11:52,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:52,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:11:52,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:11:52,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:52" (1/1) ... [2020-10-12 12:11:52,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603d5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:52, skipping insertion in model container [2020-10-12 12:11:52,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:52" (1/1) ... [2020-10-12 12:11:52,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:11:52,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:11:54,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:54,736 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:11:55,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:55,813 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:11:55,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55 WrapperNode [2020-10-12 12:11:55,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:55,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:11:55,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:11:55,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:11:55,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (1/1) ... [2020-10-12 12:11:55,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (1/1) ... [2020-10-12 12:11:55,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (1/1) ... [2020-10-12 12:11:55,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (1/1) ... [2020-10-12 12:11:56,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (1/1) ... [2020-10-12 12:11:56,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (1/1) ... [2020-10-12 12:11:56,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (1/1) ... [2020-10-12 12:11:56,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:11:56,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:11:56,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:11:56,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:11:56,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (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 [2020-10-12 12:11:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:11:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:11:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:11:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:11:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:11:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:11:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:11:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:11:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:11:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:11:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:11:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:11:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:11:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:11:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:11:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:11:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:11:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:11:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:12:02,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:12:02,983 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:12:02,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:02 BoogieIcfgContainer [2020-10-12 12:12:02,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:12:03,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:12:03,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:12:03,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:12:03,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:11:52" (1/3) ... [2020-10-12 12:12:03,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e776f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:12:03, skipping insertion in model container [2020-10-12 12:12:03,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:55" (2/3) ... [2020-10-12 12:12:03,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e776f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:12:03, skipping insertion in model container [2020-10-12 12:12:03,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:02" (3/3) ... [2020-10-12 12:12:03,009 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label38.c [2020-10-12 12:12:03,019 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:12:03,032 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:12:03,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:12:03,079 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:12:03,079 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:12:03,080 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:12:03,080 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:12:03,080 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:12:03,080 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:12:03,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:12:03,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:12:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:12:03,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-12 12:12:03,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:12:03,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:12:03,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:12:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:12:03,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1827906359, now seen corresponding path program 1 times [2020-10-12 12:12:03,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:12:03,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393109835] [2020-10-12 12:12:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:12:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:09,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 968 [2020-10-12 12:12:09,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:12:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 12:12:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:12:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:12:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:12:09,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:12:13,175 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 12:12:13,419 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-12 12:12:13,564 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-12 12:12:13,735 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-12 12:12:13,890 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-12 12:12:14,092 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-10-12 12:12:14,462 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 81 [2020-10-12 12:12:14,825 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 81 [2020-10-12 12:12:15,121 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 64 [2020-10-12 12:12:15,296 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-12 12:12:15,543 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-12 12:12:15,732 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-12 12:12:16,115 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:12:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:12:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:16,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:12:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:12:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:12:16,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:12:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:12:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:12:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:12:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:12:26,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393109835] [2020-10-12 12:12:26,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:12:26,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:12:26,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278028956] [2020-10-12 12:12:26,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:12:26,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:12:26,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:12:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:12:26,505 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:12:26,844 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:12:27,445 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2020-10-12 12:12:28,030 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2020-10-12 12:12:28,678 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 182 [2020-10-12 12:12:32,285 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 180 [2020-10-12 12:12:35,452 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2020-10-12 12:12:37,856 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 170 [2020-10-12 12:12:38,607 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 180 [2020-10-12 12:12:39,865 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 178 [2020-10-12 12:12:48,729 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 163 [2020-10-12 12:12:49,335 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 170 [2020-10-12 12:12:52,052 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 167 [2020-10-12 12:12:58,691 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-12 12:12:59,289 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-12 12:13:01,465 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-12 12:13:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:13,160 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:13:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:13:13,162 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 952 [2020-10-12 12:13:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:13,198 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:13:13,199 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:13:13,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:13:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:13:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:13:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:13:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:13:13,402 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 952 [2020-10-12 12:13:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:13,406 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:13:13,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:13:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:13:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2020-10-12 12:13:13,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:13,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:13,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:13:13,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:13,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2060123638, now seen corresponding path program 1 times [2020-10-12 12:13:13,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:13,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312632101] [2020-10-12 12:13:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:19,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:19,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1040 [2020-10-12 12:13:19,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:19,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 12:13:19,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:13:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:13:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 959 [2020-10-12 12:13:19,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:19,813 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:19,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:19,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:19,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:19,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:19,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 12:13:19,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:20,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:20,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 12:13:20,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:13:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:13:20,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312632101] [2020-10-12 12:13:20,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:20,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:13:20,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707057885] [2020-10-12 12:13:20,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:13:20,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:20,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:13:20,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:13:20,820 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:13:21,196 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:34,714 INFO L93 Difference]: Finished difference Result 4397 states and 7435 transitions. [2020-10-12 12:13:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:13:34,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1022 [2020-10-12 12:13:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:34,736 INFO L225 Difference]: With dead ends: 4397 [2020-10-12 12:13:34,736 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 12:13:34,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:13:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 12:13:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3087. [2020-10-12 12:13:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-12 12:13:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4566 transitions. [2020-10-12 12:13:34,821 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4566 transitions. Word has length 1022 [2020-10-12 12:13:34,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:34,824 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4566 transitions. [2020-10-12 12:13:34,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:13:34,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4566 transitions. [2020-10-12 12:13:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-10-12 12:13:34,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:34,848 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:34,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:13:34,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1870677437, now seen corresponding path program 1 times [2020-10-12 12:13:34,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:34,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786985109] [2020-10-12 12:13:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1051 [2020-10-12 12:13:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:13:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 12:13:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:13:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:13:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 12:13:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:40,400 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:40,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:40,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:40,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:13:40,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:13:40,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:40,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:40,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:40,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:40,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:40,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 12:13:40,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:13:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 12:13:40,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:40,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:40,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:40,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:13:40,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:40,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 12:13:40,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:13:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 12:13:41,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786985109] [2020-10-12 12:13:41,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:41,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:13:41,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047512158] [2020-10-12 12:13:41,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:13:41,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:41,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:13:41,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:13:41,215 INFO L87 Difference]: Start difference. First operand 3087 states and 4566 transitions. Second operand 7 states. [2020-10-12 12:13:41,364 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:42,410 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:13:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:57,390 INFO L93 Difference]: Finished difference Result 7679 states and 12113 transitions. [2020-10-12 12:13:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:13:57,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1031 [2020-10-12 12:13:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:57,417 INFO L225 Difference]: With dead ends: 7679 [2020-10-12 12:13:57,417 INFO L226 Difference]: Without dead ends: 5352 [2020-10-12 12:13:57,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:13:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2020-10-12 12:13:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5289. [2020-10-12 12:13:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2020-10-12 12:13:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 7682 transitions. [2020-10-12 12:13:57,590 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 7682 transitions. Word has length 1031 [2020-10-12 12:13:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:57,591 INFO L479 AbstractCegarLoop]: Abstraction has 5289 states and 7682 transitions. [2020-10-12 12:13:57,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:13:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 7682 transitions. [2020-10-12 12:13:57,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-12 12:13:57,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:57,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:57,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:13:57,618 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash 685834533, now seen corresponding path program 1 times [2020-10-12 12:13:57,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:57,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319305511] [2020-10-12 12:13:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:03,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:03,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-12 12:14:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:14:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-12 12:14:03,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:14:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 12:14:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 960 [2020-10-12 12:14:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:04,189 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:04,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:04,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:04,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:04,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:14:04,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:04,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:04,332 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:14:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:04,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:14:04,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 12:14:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:04,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:14:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:04,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:14:04,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 12:14:04,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:14:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 12:14:05,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319305511] [2020-10-12 12:14:05,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:05,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:14:05,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515411030] [2020-10-12 12:14:05,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:14:05,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:05,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:14:05,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:14:05,784 INFO L87 Difference]: Start difference. First operand 5289 states and 7682 transitions. Second operand 5 states. [2020-10-12 12:14:05,935 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 12:14:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:19,620 INFO L93 Difference]: Finished difference Result 14108 states and 21525 transitions. [2020-10-12 12:14:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:14:19,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1038 [2020-10-12 12:14:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:19,669 INFO L225 Difference]: With dead ends: 14108 [2020-10-12 12:14:19,669 INFO L226 Difference]: Without dead ends: 9579 [2020-10-12 12:14:19,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:14:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9579 states. [2020-10-12 12:14:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9579 to 9519. [2020-10-12 12:14:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9519 states. [2020-10-12 12:14:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9519 states to 9519 states and 13730 transitions. [2020-10-12 12:14:19,902 INFO L78 Accepts]: Start accepts. Automaton has 9519 states and 13730 transitions. Word has length 1038 [2020-10-12 12:14:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:19,904 INFO L479 AbstractCegarLoop]: Abstraction has 9519 states and 13730 transitions. [2020-10-12 12:14:19,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:14:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9519 states and 13730 transitions. [2020-10-12 12:14:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2020-10-12 12:14:19,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:19,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:14:19,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:14:19,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:19,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:19,944 INFO L82 PathProgramCache]: Analyzing trace with hash -317484494, now seen corresponding path program 1 times [2020-10-12 12:14:19,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:19,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048556191] [2020-10-12 12:14:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:20,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:20,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:25,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:14:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:25,684 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:25,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 12:14:25,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:14:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:25,860 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:14:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:14:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 12:14:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:14:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:14:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:14:26,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:14:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 12:14:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:26,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 12:14:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:26,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:26,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 12:14:26,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 12:14:26,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 12:14:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:26,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 92 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 12:14:27,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048556191] [2020-10-12 12:14:27,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:27,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:14:27,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966709987] [2020-10-12 12:14:27,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:14:27,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:14:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:14:27,838 INFO L87 Difference]: Start difference. First operand 9519 states and 13730 transitions. Second operand 8 states. [2020-10-12 12:14:27,986 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:14:29,298 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:14:31,027 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:14:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:54,559 INFO L93 Difference]: Finished difference Result 36006 states and 56098 transitions. [2020-10-12 12:14:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 12:14:54,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1055 [2020-10-12 12:14:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:54,665 INFO L225 Difference]: With dead ends: 36006 [2020-10-12 12:14:54,666 INFO L226 Difference]: Without dead ends: 27247 [2020-10-12 12:14:54,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 12:14:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27247 states. [2020-10-12 12:14:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27247 to 26961. [2020-10-12 12:14:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26961 states. [2020-10-12 12:14:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26961 states to 26961 states and 38641 transitions. [2020-10-12 12:14:55,378 INFO L78 Accepts]: Start accepts. Automaton has 26961 states and 38641 transitions. Word has length 1055 [2020-10-12 12:14:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:55,379 INFO L479 AbstractCegarLoop]: Abstraction has 26961 states and 38641 transitions. [2020-10-12 12:14:55,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:14:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 26961 states and 38641 transitions. [2020-10-12 12:14:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2020-10-12 12:14:55,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:55,478 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:14:55,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:14:55,478 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:55,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1442500445, now seen corresponding path program 1 times [2020-10-12 12:14:55,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:55,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882334102] [2020-10-12 12:14:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:00,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:00,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-12 12:15:00,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:15:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-12 12:15:00,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:15:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:15:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 12:15:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:01,320 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:15:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:15:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:01,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:15:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 12:15:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:15:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:15:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:15:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:01,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:01,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:15:01,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 12:15:01,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:15:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:15:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:15:01,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:01,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:15:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:01,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:01,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 12:15:01,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:01,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 12:15:01,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:15:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:15:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 12:15:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-12 12:15:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:01,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:01,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 12:15:01,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 12:15:01,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:15:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 12:15:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:15:01,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 12:15:02,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882334102] [2020-10-12 12:15:02,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:15:02,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:15:02,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024461581] [2020-10-12 12:15:02,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:15:02,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:15:02,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:15:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:15:02,349 INFO L87 Difference]: Start difference. First operand 26961 states and 38641 transitions. Second operand 7 states. [2020-10-12 12:15:02,488 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:15:21,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:15:21,129 INFO L93 Difference]: Finished difference Result 80374 states and 121269 transitions. [2020-10-12 12:15:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 12:15:21,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1097 [2020-10-12 12:15:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:15:21,299 INFO L225 Difference]: With dead ends: 80374 [2020-10-12 12:15:21,300 INFO L226 Difference]: Without dead ends: 54173 [2020-10-12 12:15:21,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 12:15:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54173 states. [2020-10-12 12:15:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54173 to 53999. [2020-10-12 12:15:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53999 states. [2020-10-12 12:15:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53999 states to 53999 states and 81078 transitions. [2020-10-12 12:15:22,686 INFO L78 Accepts]: Start accepts. Automaton has 53999 states and 81078 transitions. Word has length 1097 [2020-10-12 12:15:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:15:22,686 INFO L479 AbstractCegarLoop]: Abstraction has 53999 states and 81078 transitions. [2020-10-12 12:15:22,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:15:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 53999 states and 81078 transitions. [2020-10-12 12:15:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1105 [2020-10-12 12:15:22,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:15:22,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:15:22,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 12:15:22,807 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:15:22,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:15:22,808 INFO L82 PathProgramCache]: Analyzing trace with hash -467784987, now seen corresponding path program 1 times [2020-10-12 12:15:22,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:15:22,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427124461] [2020-10-12 12:15:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:15:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:28,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:28,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1124 [2020-10-12 12:15:28,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:15:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-12 12:15:28,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:15:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:15:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 12:15:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:28,351 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:15:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:15:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:28,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:28,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:15:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:15:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:15:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:15:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:28,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:15:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:28,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:28,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:15:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:15:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 12:15:28,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:15:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:15:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:15:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:15:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:28,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:28,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 12:15:28,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:28,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 12:15:28,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:15:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:15:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 12:15:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 12:15:29,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427124461] [2020-10-12 12:15:29,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:15:29,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:15:29,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019707134] [2020-10-12 12:15:29,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:15:29,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:15:29,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:15:29,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:15:29,472 INFO L87 Difference]: Start difference. First operand 53999 states and 81078 transitions. Second operand 7 states. [2020-10-12 12:15:29,612 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:15:30,969 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130