/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:34:16,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:34:16,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:34:16,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:34:16,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:34:16,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:34:16,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:34:16,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:34:16,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:34:16,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:34:16,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:34:16,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:34:16,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:34:16,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:34:16,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:34:16,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:34:16,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:34:16,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:34:16,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:34:16,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:34:16,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:34:16,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:34:16,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:34:16,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:34:16,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:34:16,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:34:16,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:34:16,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:34:16,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:34:16,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:34:16,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:34:16,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:34:16,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:34:16,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:34:16,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:34:16,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:34:16,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:34:16,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:34:16,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:34:16,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:34:16,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:34:16,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 01:34:16,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:34:16,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:34:16,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:34:16,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:34:16,657 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:34:16,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:34:16,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:34:16,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:34:16,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:34:16,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:34:16,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:34:16,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:34:16,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:34:16,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:34:16,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:34:16,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:34:16,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:34:16,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:34:16,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:34:16,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:34:16,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:34:16,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:34:16,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:34:16,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:34:16,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:34:16,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:34:16,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:34:16,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:34:16,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:34:16,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:34:16,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:34:16,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:34:16,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:34:17,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:34:17,000 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:34:17,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label22.c [2020-10-14 01:34:17,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88ab8c241/260ec85e3134446f9b908f97fdf4cd2f/FLAG9c9e7a375 [2020-10-14 01:34:18,059 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:34:18,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label22.c [2020-10-14 01:34:18,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88ab8c241/260ec85e3134446f9b908f97fdf4cd2f/FLAG9c9e7a375 [2020-10-14 01:34:18,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88ab8c241/260ec85e3134446f9b908f97fdf4cd2f [2020-10-14 01:34:18,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:34:18,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:34:18,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:34:18,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:34:18,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:34:18,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:34:18" (1/1) ... [2020-10-14 01:34:18,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574ab8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:18, skipping insertion in model container [2020-10-14 01:34:18,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:34:18" (1/1) ... [2020-10-14 01:34:18,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:34:18,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:34:20,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:34:20,876 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:34:22,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:34:22,077 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:34:22,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22 WrapperNode [2020-10-14 01:34:22,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:34:22,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:34:22,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:34:22,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:34:22,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... [2020-10-14 01:34:22,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... [2020-10-14 01:34:22,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... [2020-10-14 01:34:22,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... [2020-10-14 01:34:22,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... [2020-10-14 01:34:22,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... [2020-10-14 01:34:22,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... [2020-10-14 01:34:22,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:34:22,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:34:22,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:34:22,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:34:22,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:34:22,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:34:22,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:34:22,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:34:22,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:34:22,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:34:22,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:34:22,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:34:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:34:22,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:34:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:34:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:34:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:34:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:34:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:34:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:34:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:34:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:34:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:34:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:34:29,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:34:29,856 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:34:29,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:34:29 BoogieIcfgContainer [2020-10-14 01:34:29,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:34:29,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:34:29,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:34:29,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:34:29,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:34:18" (1/3) ... [2020-10-14 01:34:29,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3fc86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:34:29, skipping insertion in model container [2020-10-14 01:34:29,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:34:22" (2/3) ... [2020-10-14 01:34:29,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3fc86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:34:29, skipping insertion in model container [2020-10-14 01:34:29,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:34:29" (3/3) ... [2020-10-14 01:34:29,880 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label22.c [2020-10-14 01:34:29,891 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:34:29,900 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:34:29,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:34:29,945 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:34:29,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:34:29,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:34:29,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:34:29,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:34:29,946 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:34:29,946 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:34:29,946 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:34:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:34:30,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-14 01:34:30,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:34:30,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:34:30,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:34:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:34:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2044448480, now seen corresponding path program 1 times [2020-10-14 01:34:30,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:34:30,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502225586] [2020-10-14 01:34:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:34:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:36,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:36,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-14 01:34:36,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:34:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 01:34:36,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:36,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:34:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:34:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 999 [2020-10-14 01:34:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:34:37,556 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:34:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:34:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:37,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:37,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:34:37,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:34:37,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:34:37,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:37,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:34:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:34:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:34:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:34:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:34:38,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502225586] [2020-10-14 01:34:38,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:34:38,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:34:38,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133076796] [2020-10-14 01:34:38,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:34:38,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:34:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:34:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:34:38,773 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 01:34:38,992 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:34:39,298 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:34:58,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:34:58,344 INFO L93 Difference]: Finished difference Result 4880 states and 9208 transitions. [2020-10-14 01:34:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:34:58,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 989 [2020-10-14 01:34:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:34:58,400 INFO L225 Difference]: With dead ends: 4880 [2020-10-14 01:34:58,400 INFO L226 Difference]: Without dead ends: 3497 [2020-10-14 01:34:58,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:34:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2020-10-14 01:34:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3403. [2020-10-14 01:34:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-10-14 01:34:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5930 transitions. [2020-10-14 01:34:58,617 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5930 transitions. Word has length 989 [2020-10-14 01:34:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:34:58,620 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 5930 transitions. [2020-10-14 01:34:58,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:34:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5930 transitions. [2020-10-14 01:34:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-14 01:34:58,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:34:58,663 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:34:58,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:34:58,664 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:34:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:34:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1236364693, now seen corresponding path program 1 times [2020-10-14 01:34:58,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:34:58,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445666422] [2020-10-14 01:34:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:34:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:04,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-14 01:35:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:35:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5242 [2020-10-14 01:35:04,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:04,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:35:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:35:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:35:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:35:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:04,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:35:04,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:35:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:35:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:35:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 01:35:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:35:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:04,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:35:04,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 01:35:04,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:04,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:35:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:35:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:35:04,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:35:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:35:05,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445666422] [2020-10-14 01:35:05,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:35:05,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:35:05,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021954094] [2020-10-14 01:35:05,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:35:05,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:35:05,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:35:05,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:35:05,049 INFO L87 Difference]: Start difference. First operand 3403 states and 5930 transitions. Second operand 7 states. [2020-10-14 01:35:05,190 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:35:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:35:22,202 INFO L93 Difference]: Finished difference Result 10320 states and 18092 transitions. [2020-10-14 01:35:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:35:22,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 997 [2020-10-14 01:35:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:35:22,247 INFO L225 Difference]: With dead ends: 10320 [2020-10-14 01:35:22,248 INFO L226 Difference]: Without dead ends: 6923 [2020-10-14 01:35:22,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 01:35:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2020-10-14 01:35:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 6870. [2020-10-14 01:35:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6870 states. [2020-10-14 01:35:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 11981 transitions. [2020-10-14 01:35:22,538 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 11981 transitions. Word has length 997 [2020-10-14 01:35:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:35:22,538 INFO L479 AbstractCegarLoop]: Abstraction has 6870 states and 11981 transitions. [2020-10-14 01:35:22,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:35:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 11981 transitions. [2020-10-14 01:35:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2020-10-14 01:35:22,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:35:22,570 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:35:22,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:35:22,570 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:35:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:35:22,571 INFO L82 PathProgramCache]: Analyzing trace with hash -2074414285, now seen corresponding path program 1 times [2020-10-14 01:35:22,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:35:22,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763509543] [2020-10-14 01:35:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:35:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:27,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:27,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-14 01:35:27,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:35:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-14 01:35:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:27,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:35:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:35:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:35:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:28,746 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:35:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:35:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:28,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:28,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:28,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:35:28,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:28,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:35:28,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:28,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:35:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:35:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:28,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:35:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:28,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:35:28,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 01:35:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:28,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:35:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:35:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:35:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:35:29,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763509543] [2020-10-14 01:35:29,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:35:29,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:35:29,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100362283] [2020-10-14 01:35:29,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:35:29,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:35:29,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:35:29,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:35:29,362 INFO L87 Difference]: Start difference. First operand 6870 states and 11981 transitions. Second operand 7 states. [2020-10-14 01:35:29,498 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:35:30,435 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:35:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:35:46,474 INFO L93 Difference]: Finished difference Result 20801 states and 37251 transitions. [2020-10-14 01:35:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:35:46,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1004 [2020-10-14 01:35:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:35:46,545 INFO L225 Difference]: With dead ends: 20801 [2020-10-14 01:35:46,546 INFO L226 Difference]: Without dead ends: 13937 [2020-10-14 01:35:46,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:35:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13937 states. [2020-10-14 01:35:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13937 to 13537. [2020-10-14 01:35:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13537 states. [2020-10-14 01:35:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13537 states to 13537 states and 21769 transitions. [2020-10-14 01:35:46,972 INFO L78 Accepts]: Start accepts. Automaton has 13537 states and 21769 transitions. Word has length 1004 [2020-10-14 01:35:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:35:46,973 INFO L479 AbstractCegarLoop]: Abstraction has 13537 states and 21769 transitions. [2020-10-14 01:35:46,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:35:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 13537 states and 21769 transitions. [2020-10-14 01:35:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-10-14 01:35:47,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:35:47,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:35:47,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:35:47,032 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:35:47,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:35:47,034 INFO L82 PathProgramCache]: Analyzing trace with hash -375593628, now seen corresponding path program 1 times [2020-10-14 01:35:47,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:35:47,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031127034] [2020-10-14 01:35:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:35:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:52,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:52,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1035 [2020-10-14 01:35:52,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:35:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5234 [2020-10-14 01:35:52,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:52,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:35:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:35:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 01:35:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:35:53,295 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:35:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:35:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:53,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:53,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:35:53,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:35:53,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:53,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:35:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:35:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:53,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:35:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:53,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:53,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:35:53,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:53,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 01:35:53,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:53,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:35:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:35:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 01:35:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:35:54,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031127034] [2020-10-14 01:35:54,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:35:54,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:35:54,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731670875] [2020-10-14 01:35:54,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:35:54,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:35:54,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:35:54,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:35:54,225 INFO L87 Difference]: Start difference. First operand 13537 states and 21769 transitions. Second operand 7 states. [2020-10-14 01:35:54,383 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:35:55,348 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:36:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:36:12,458 INFO L93 Difference]: Finished difference Result 40603 states and 67914 transitions. [2020-10-14 01:36:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:36:12,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1017 [2020-10-14 01:36:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:36:12,564 INFO L225 Difference]: With dead ends: 40603 [2020-10-14 01:36:12,564 INFO L226 Difference]: Without dead ends: 27072 [2020-10-14 01:36:12,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:36:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27072 states. [2020-10-14 01:36:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27072 to 26915. [2020-10-14 01:36:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26915 states. [2020-10-14 01:36:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26915 states to 26915 states and 41368 transitions. [2020-10-14 01:36:13,327 INFO L78 Accepts]: Start accepts. Automaton has 26915 states and 41368 transitions. Word has length 1017 [2020-10-14 01:36:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:36:13,328 INFO L479 AbstractCegarLoop]: Abstraction has 26915 states and 41368 transitions. [2020-10-14 01:36:13,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:36:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 26915 states and 41368 transitions. [2020-10-14 01:36:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-14 01:36:13,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:36:13,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:36:13,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:36:13,427 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:36:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:36:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash -413864401, now seen corresponding path program 1 times [2020-10-14 01:36:13,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:36:13,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932950323] [2020-10-14 01:36:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:36:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:18,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:18,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-14 01:36:18,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:36:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-14 01:36:18,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:18,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:36:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:36:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 01:36:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:18,900 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:36:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:36:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:18,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:18,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:36:18,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:36:18,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:18,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:36:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:36:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 01:36:19,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:36:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:19,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:19,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 01:36:19,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:19,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 01:36:19,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:19,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:36:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 01:36:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:36:19,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932950323] [2020-10-14 01:36:19,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:36:19,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:36:19,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684468269] [2020-10-14 01:36:19,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:36:19,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:36:19,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:36:19,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:36:19,771 INFO L87 Difference]: Start difference. First operand 26915 states and 41368 transitions. Second operand 7 states. [2020-10-14 01:36:19,939 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:36:21,195 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:36:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:36:37,757 INFO L93 Difference]: Finished difference Result 81399 states and 133855 transitions. [2020-10-14 01:36:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:36:37,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1018 [2020-10-14 01:36:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:36:37,975 INFO L225 Difference]: With dead ends: 81399 [2020-10-14 01:36:37,975 INFO L226 Difference]: Without dead ends: 54490 [2020-10-14 01:36:38,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:36:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54490 states. [2020-10-14 01:36:39,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54490 to 54100. [2020-10-14 01:36:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54100 states. [2020-10-14 01:36:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54100 states to 54100 states and 84792 transitions. [2020-10-14 01:36:39,470 INFO L78 Accepts]: Start accepts. Automaton has 54100 states and 84792 transitions. Word has length 1018 [2020-10-14 01:36:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:36:39,471 INFO L479 AbstractCegarLoop]: Abstraction has 54100 states and 84792 transitions. [2020-10-14 01:36:39,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:36:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 54100 states and 84792 transitions. [2020-10-14 01:36:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-14 01:36:39,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:36:39,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:36:39,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:36:39,622 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:36:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:36:39,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1422003864, now seen corresponding path program 1 times [2020-10-14 01:36:39,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:36:39,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549272503] [2020-10-14 01:36:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:36:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:42,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:45,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:45,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-14 01:36:45,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:36:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-14 01:36:45,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:45,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:36:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:36:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 01:36:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:45,394 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:36:45,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:36:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:45,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:45,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:36:45,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:45,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:36:45,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:45,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:36:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:36:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:45,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:36:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:36:45,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:36:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:45,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:36:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:36:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 01:36:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:45,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:45,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 01:36:45,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:36:45,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:45,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:36:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 01:36:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:36:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 01:36:46,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549272503] [2020-10-14 01:36:46,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:36:46,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:36:46,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907562438] [2020-10-14 01:36:46,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:36:46,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:36:46,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:36:46,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:36:46,188 INFO L87 Difference]: Start difference. First operand 54100 states and 84792 transitions. Second operand 8 states. [2020-10-14 01:36:46,346 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:36:46,658 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 01:36:48,388 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:37:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:37:13,011 INFO L93 Difference]: Finished difference Result 170050 states and 284956 transitions. [2020-10-14 01:37:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:37:13,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1027 [2020-10-14 01:37:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:37:13,498 INFO L225 Difference]: With dead ends: 170050 [2020-10-14 01:37:13,498 INFO L226 Difference]: Without dead ends: 115956 [2020-10-14 01:37:13,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:37:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115956 states. [2020-10-14 01:37:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115956 to 115577. [2020-10-14 01:37:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115577 states. [2020-10-14 01:37:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115577 states to 115577 states and 183730 transitions. [2020-10-14 01:37:17,387 INFO L78 Accepts]: Start accepts. Automaton has 115577 states and 183730 transitions. Word has length 1027 [2020-10-14 01:37:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:37:17,387 INFO L479 AbstractCegarLoop]: Abstraction has 115577 states and 183730 transitions. [2020-10-14 01:37:17,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:37:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 115577 states and 183730 transitions. [2020-10-14 01:37:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2020-10-14 01:37:17,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:37:17,787 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:37:17,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:37:17,788 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:37:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:37:17,788 INFO L82 PathProgramCache]: Analyzing trace with hash 60266811, now seen corresponding path program 1 times [2020-10-14 01:37:17,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:37:17,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133339289] [2020-10-14 01:37:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:37:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:17,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1072 [2020-10-14 01:37:23,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:37:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5785 [2020-10-14 01:37:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:37:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:37:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 01:37:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:37:24,021 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:37:24,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:37:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:24,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:24,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:37:24,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:37:24,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:24,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:37:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:37:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:37:24,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:37:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:37:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:24,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:24,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 01:37:24,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:24,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 01:37:24,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:24,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:37:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:37:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 01:37:24,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:37:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 01:37:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:24,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:24,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:37:24,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 01:37:24,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:24,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:37:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:37:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:37:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:37:24,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:37:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:24,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:24,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 01:37:24,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:37:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:24,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:37:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 01:37:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:37:24,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:37:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 57 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:37:24,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133339289] [2020-10-14 01:37:24,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:37:24,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:37:24,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408274339] [2020-10-14 01:37:24,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:37:24,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:37:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:37:24,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:37:24,799 INFO L87 Difference]: Start difference. First operand 115577 states and 183730 transitions. Second operand 7 states. [2020-10-14 01:37:24,952 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 01:37:26,794 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 01:37:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:37:45,153 INFO L93 Difference]: Finished difference Result 348232 states and 605847 transitions. [2020-10-14 01:37:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:37:45,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1050 [2020-10-14 01:37:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:37:46,258 INFO L225 Difference]: With dead ends: 348232 [2020-10-14 01:37:46,258 INFO L226 Difference]: Without dead ends: 232661 [2020-10-14 01:37:46,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:37:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232661 states.