/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:27:08,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:27:08,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:27:08,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:27:08,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:27:08,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:27:08,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:27:08,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:27:08,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:27:08,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:27:08,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:27:08,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:27:08,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:27:08,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:27:08,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:27:08,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:27:08,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:27:08,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:27:08,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:27:08,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:27:08,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:27:08,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:27:08,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:27:08,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:27:08,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:27:08,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:27:08,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:27:08,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:27:08,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:27:08,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:27:08,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:27:08,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:27:08,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:27:08,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:27:08,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:27:08,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:27:08,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:27:08,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:27:08,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:27:08,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:27:08,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:27:08,674 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 22:27:08,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:27:08,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:27:08,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:27:08,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:27:08,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:27:08,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:27:08,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:27:08,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:27:08,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:27:08,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:27:08,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:27:08,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:27:08,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:27:08,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:27:08,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:27:08,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:27:08,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:27:08,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:27:08,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:27:08,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:27:08,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:27:08,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:08,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:27:08,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:27:08,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:27:08,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:27:08,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:27:08,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:27:08,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:27:08,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:27:09,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:27:09,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:27:09,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:27:09,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:27:09,117 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:27:09,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2020-10-14 22:27:09,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0af643e59/773fd5eff2574a14bc90cc3094680e49/FLAG9bb1d361c [2020-10-14 22:27:10,135 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:27:10,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2020-10-14 22:27:10,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0af643e59/773fd5eff2574a14bc90cc3094680e49/FLAG9bb1d361c [2020-10-14 22:27:10,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0af643e59/773fd5eff2574a14bc90cc3094680e49 [2020-10-14 22:27:10,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:27:10,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:27:10,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:10,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:27:10,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:27:10,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:10" (1/1) ... [2020-10-14 22:27:10,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:10, skipping insertion in model container [2020-10-14 22:27:10,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:10" (1/1) ... [2020-10-14 22:27:10,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:27:10,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:27:11,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:11,981 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:27:12,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:12,466 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:27:12,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12 WrapperNode [2020-10-14 22:27:12,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:12,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:27:12,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:27:12,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:27:12,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (1/1) ... [2020-10-14 22:27:12,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (1/1) ... [2020-10-14 22:27:12,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (1/1) ... [2020-10-14 22:27:12,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (1/1) ... [2020-10-14 22:27:12,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (1/1) ... [2020-10-14 22:27:12,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (1/1) ... [2020-10-14 22:27:12,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (1/1) ... [2020-10-14 22:27:12,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:27:12,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:27:12,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:27:12,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:27:12,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (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 22:27:12,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:27:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:27:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:27:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:27:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:27:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:27:12,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:27:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:27:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:27:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:27:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:27:12,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:27:12,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:27:21,925 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:27:21,925 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:27:21,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:21 BoogieIcfgContainer [2020-10-14 22:27:21,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:27:21,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:27:21,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:27:21,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:27:21,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:27:10" (1/3) ... [2020-10-14 22:27:21,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b97793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:21, skipping insertion in model container [2020-10-14 22:27:21,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:12" (2/3) ... [2020-10-14 22:27:21,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b97793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:21, skipping insertion in model container [2020-10-14 22:27:21,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:21" (3/3) ... [2020-10-14 22:27:21,959 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label15.c [2020-10-14 22:27:21,972 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:27:21,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:27:22,012 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:27:22,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:27:22,060 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:27:22,060 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:27:22,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:27:22,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:27:22,061 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:27:22,061 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:27:22,061 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:27:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:27:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 22:27:22,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:22,130 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] [2020-10-14 22:27:22,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:22,141 INFO L82 PathProgramCache]: Analyzing trace with hash -138531991, now seen corresponding path program 1 times [2020-10-14 22:27:22,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:22,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27417807] [2020-10-14 22:27:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 22:27:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-14 22:27:22,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:22,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:27:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 22:27:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:27:22,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:22,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:27:22,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:22,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:22,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:22,975 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 22:27:22,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27417807] [2020-10-14 22:27:22,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:27:22,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:27:22,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563535609] [2020-10-14 22:27:22,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:27:22,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:23,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:27:23,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:27:23,004 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:27:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:32,778 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-14 22:27:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:27:32,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 22:27:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:32,807 INFO L225 Difference]: With dead ends: 1693 [2020-10-14 22:27:32,807 INFO L226 Difference]: Without dead ends: 1011 [2020-10-14 22:27:32,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:27:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-14 22:27:32,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-14 22:27:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-14 22:27:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-14 22:27:32,946 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 42 [2020-10-14 22:27:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:32,946 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-14 22:27:32,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:27:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-14 22:27:32,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 22:27:32,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:32,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:32,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:27:32,960 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:32,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:32,960 INFO L82 PathProgramCache]: Analyzing trace with hash -42411912, now seen corresponding path program 1 times [2020-10-14 22:27:32,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:32,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397999622] [2020-10-14 22:27:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:34,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:27:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:27:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-10-14 22:27:34,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:34,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:27:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:27:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:34,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:34,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:34,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:27:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:34,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:34,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:34,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:27:34,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-14 22:27:34,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:34,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:27:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:27:34,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397999622] [2020-10-14 22:27:34,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:34,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:27:34,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005025308] [2020-10-14 22:27:34,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:27:34,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:27:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:27:34,989 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 6 states. [2020-10-14 22:27:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:52,688 INFO L93 Difference]: Finished difference Result 2461 states and 4052 transitions. [2020-10-14 22:27:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:27:52,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-14 22:27:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:52,701 INFO L225 Difference]: With dead ends: 2461 [2020-10-14 22:27:52,701 INFO L226 Difference]: Without dead ends: 1481 [2020-10-14 22:27:52,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:27:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-10-14 22:27:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1457. [2020-10-14 22:27:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-14 22:27:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2052 transitions. [2020-10-14 22:27:52,780 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2052 transitions. Word has length 111 [2020-10-14 22:27:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:52,782 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 2052 transitions. [2020-10-14 22:27:52,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:27:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2052 transitions. [2020-10-14 22:27:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 22:27:52,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:52,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:52,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:27:52,796 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1423483904, now seen corresponding path program 1 times [2020-10-14 22:27:52,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:52,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987595215] [2020-10-14 22:27:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:53,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:53,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 22:27:53,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:53,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-14 22:27:53,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:53,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:27:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 22:27:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:54,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:27:54,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:27:54,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 22:27:54,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:27:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:27:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:27:54,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987595215] [2020-10-14 22:27:54,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:54,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:27:54,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247755611] [2020-10-14 22:27:54,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:27:54,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:27:54,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:27:54,538 INFO L87 Difference]: Start difference. First operand 1457 states and 2052 transitions. Second operand 8 states. [2020-10-14 22:28:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:09,430 INFO L93 Difference]: Finished difference Result 3900 states and 5644 transitions. [2020-10-14 22:28:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:28:09,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-14 22:28:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:09,447 INFO L225 Difference]: With dead ends: 3900 [2020-10-14 22:28:09,447 INFO L226 Difference]: Without dead ends: 2449 [2020-10-14 22:28:09,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:28:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2020-10-14 22:28:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2399. [2020-10-14 22:28:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-14 22:28:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3133 transitions. [2020-10-14 22:28:09,524 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3133 transitions. Word has length 116 [2020-10-14 22:28:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:09,524 INFO L479 AbstractCegarLoop]: Abstraction has 2399 states and 3133 transitions. [2020-10-14 22:28:09,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:28:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3133 transitions. [2020-10-14 22:28:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 22:28:09,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:09,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:28:09,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:28:09,529 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:09,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1245863489, now seen corresponding path program 1 times [2020-10-14 22:28:09,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:09,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638810499] [2020-10-14 22:28:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:14,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 22:28:14,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:28:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 22:28:14,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:14,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:28:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 22:28:14,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:14,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:14,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:14,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:28:14,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:14,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:14,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:14,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:14,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:14,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 22:28:14,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:14,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:28:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 22:28:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:14,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:15,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:15,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:28:15,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:15,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 22:28:15,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:15,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:28:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:28:15,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638810499] [2020-10-14 22:28:15,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:15,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:28:15,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561046337] [2020-10-14 22:28:15,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:28:15,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:15,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:28:15,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:28:15,199 INFO L87 Difference]: Start difference. First operand 2399 states and 3133 transitions. Second operand 8 states. [2020-10-14 22:28:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:28,733 INFO L93 Difference]: Finished difference Result 8112 states and 11169 transitions. [2020-10-14 22:28:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:28:28,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-10-14 22:28:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:28,764 INFO L225 Difference]: With dead ends: 8112 [2020-10-14 22:28:28,764 INFO L226 Difference]: Without dead ends: 5239 [2020-10-14 22:28:28,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:28:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2020-10-14 22:28:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5162. [2020-10-14 22:28:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5162 states. [2020-10-14 22:28:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 6269 transitions. [2020-10-14 22:28:28,928 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 6269 transitions. Word has length 185 [2020-10-14 22:28:28,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:28,930 INFO L479 AbstractCegarLoop]: Abstraction has 5162 states and 6269 transitions. [2020-10-14 22:28:28,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:28:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 6269 transitions. [2020-10-14 22:28:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 22:28:28,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:28,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:28:28,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:28:28,935 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:28,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1864684539, now seen corresponding path program 1 times [2020-10-14 22:28:28,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:28,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2629726] [2020-10-14 22:28:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:31,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:31,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 22:28:31,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:28:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2174 [2020-10-14 22:28:31,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:31,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:28:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 22:28:31,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:31,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:31,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:31,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:31,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:28:31,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:31,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:31,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:31,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:31,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:31,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:31,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:31,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 22:28:31,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:31,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:28:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:31,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:28:31,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 22:28:31,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:31,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:28:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 22:28:31,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2629726] [2020-10-14 22:28:31,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:31,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:28:31,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917771145] [2020-10-14 22:28:31,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:28:31,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:31,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:28:31,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:28:31,918 INFO L87 Difference]: Start difference. First operand 5162 states and 6269 transitions. Second operand 6 states. [2020-10-14 22:28:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:45,251 INFO L93 Difference]: Finished difference Result 10766 states and 13253 transitions. [2020-10-14 22:28:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:28:45,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2020-10-14 22:28:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:45,297 INFO L225 Difference]: With dead ends: 10766 [2020-10-14 22:28:45,298 INFO L226 Difference]: Without dead ends: 6048 [2020-10-14 22:28:45,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2020-10-14 22:28:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 5597. [2020-10-14 22:28:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5597 states. [2020-10-14 22:28:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 6879 transitions. [2020-10-14 22:28:45,521 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 6879 transitions. Word has length 231 [2020-10-14 22:28:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:45,524 INFO L479 AbstractCegarLoop]: Abstraction has 5597 states and 6879 transitions. [2020-10-14 22:28:45,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:28:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 6879 transitions. [2020-10-14 22:28:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 22:28:45,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:45,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 22:28:45,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:28:45,531 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:45,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1532036568, now seen corresponding path program 1 times [2020-10-14 22:28:45,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:45,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769625474] [2020-10-14 22:28:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:50,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:50,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 22:28:50,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4819 [2020-10-14 22:28:50,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:50,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:28:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:50,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:50,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:50,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:28:50,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:50,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:50,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:50,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:50,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:28:50,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:50,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:28:51,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 22:28:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:28:51,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 22:28:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:28:51,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 22:28:51,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:28:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 193 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:28:51,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769625474] [2020-10-14 22:28:51,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:51,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:51,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073019453] [2020-10-14 22:28:51,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:51,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:51,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:51,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:51,363 INFO L87 Difference]: Start difference. First operand 5597 states and 6879 transitions. Second operand 7 states. [2020-10-14 22:29:08,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:08,737 INFO L93 Difference]: Finished difference Result 13226 states and 16866 transitions. [2020-10-14 22:29:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:29:08,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-14 22:29:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:08,790 INFO L225 Difference]: With dead ends: 13226 [2020-10-14 22:29:08,790 INFO L226 Difference]: Without dead ends: 8073 [2020-10-14 22:29:08,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:29:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8073 states. [2020-10-14 22:29:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8073 to 7999. [2020-10-14 22:29:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7999 states. [2020-10-14 22:29:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 9785 transitions. [2020-10-14 22:29:09,109 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 9785 transitions. Word has length 302 [2020-10-14 22:29:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:09,110 INFO L479 AbstractCegarLoop]: Abstraction has 7999 states and 9785 transitions. [2020-10-14 22:29:09,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:29:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 9785 transitions. [2020-10-14 22:29:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-14 22:29:09,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:09,117 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:09,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:29:09,118 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1619777209, now seen corresponding path program 1 times [2020-10-14 22:29:09,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:09,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828360284] [2020-10-14 22:29:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:12,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:12,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 22:29:12,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3423 [2020-10-14 22:29:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:12,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:29:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:12,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:29:12,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:12,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:12,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:12,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 22:29:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:12,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:13,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:13,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:13,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:29:13,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 22:29:13,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:13,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:29:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:29:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:29:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:29:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:29:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 193 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:29:13,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828360284] [2020-10-14 22:29:13,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:13,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:29:13,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045608439] [2020-10-14 22:29:13,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:29:13,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:29:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:29:13,645 INFO L87 Difference]: Start difference. First operand 7999 states and 9785 transitions. Second operand 7 states. [2020-10-14 22:29:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:31,868 INFO L93 Difference]: Finished difference Result 16560 states and 20332 transitions. [2020-10-14 22:29:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:29:31,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-14 22:29:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:31,918 INFO L225 Difference]: With dead ends: 16560 [2020-10-14 22:29:31,919 INFO L226 Difference]: Without dead ends: 9005 [2020-10-14 22:29:31,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:29:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9005 states. [2020-10-14 22:29:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9005 to 8917. [2020-10-14 22:29:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8917 states. [2020-10-14 22:29:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8917 states to 8917 states and 10832 transitions. [2020-10-14 22:29:32,146 INFO L78 Accepts]: Start accepts. Automaton has 8917 states and 10832 transitions. Word has length 309 [2020-10-14 22:29:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:32,147 INFO L479 AbstractCegarLoop]: Abstraction has 8917 states and 10832 transitions. [2020-10-14 22:29:32,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:29:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 8917 states and 10832 transitions. [2020-10-14 22:29:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 22:29:32,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:32,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:32,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:29:32,156 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1464198425, now seen corresponding path program 1 times [2020-10-14 22:29:32,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:32,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694460157] [2020-10-14 22:29:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:37,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:37,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-14 22:29:37,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:29:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 22:29:37,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:37,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:29:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:29:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:37,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:37,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:37,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:29:37,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:37,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:37,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:37,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 22:29:37,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:37,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:29:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:38,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:38,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:29:38,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 22:29:38,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:38,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:29:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:29:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:38,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:38,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:29:38,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 22:29:38,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:38,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:29:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 110 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:29:38,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694460157] [2020-10-14 22:29:38,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:38,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:29:38,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804906431] [2020-10-14 22:29:38,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:29:38,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:38,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:29:38,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:29:38,941 INFO L87 Difference]: Start difference. First operand 8917 states and 10832 transitions. Second operand 10 states. [2020-10-14 22:29:39,105 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-14 22:30:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:05,888 INFO L93 Difference]: Finished difference Result 18231 states and 22345 transitions. [2020-10-14 22:30:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:30:05,891 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 333 [2020-10-14 22:30:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:05,931 INFO L225 Difference]: With dead ends: 18231 [2020-10-14 22:30:05,932 INFO L226 Difference]: Without dead ends: 9758 [2020-10-14 22:30:05,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-14 22:30:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2020-10-14 22:30:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 9397. [2020-10-14 22:30:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9397 states. [2020-10-14 22:30:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 11301 transitions. [2020-10-14 22:30:06,274 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 11301 transitions. Word has length 333 [2020-10-14 22:30:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:06,275 INFO L479 AbstractCegarLoop]: Abstraction has 9397 states and 11301 transitions. [2020-10-14 22:30:06,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:30:06,275 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 11301 transitions. [2020-10-14 22:30:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-14 22:30:06,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:06,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:06,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:30:06,290 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:06,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:06,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1274936281, now seen corresponding path program 1 times [2020-10-14 22:30:06,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:06,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375734794] [2020-10-14 22:30:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:08,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:08,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 22:30:08,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-10-14 22:30:08,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:08,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-14 22:30:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 22:30:08,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:08,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:08,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:08,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:30:08,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:08,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:08,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:08,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:08,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 22:30:08,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:08,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-14 22:30:08,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:08,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 22:30:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:30:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:30:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:08,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 22:30:08,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:08,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:30:08,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:08,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 22:30:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:09,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375734794] [2020-10-14 22:30:09,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:09,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:09,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456336446] [2020-10-14 22:30:09,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:30:09,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:09,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:30:09,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:30:09,206 INFO L87 Difference]: Start difference. First operand 9397 states and 11301 transitions. Second operand 5 states. [2020-10-14 22:30:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:29,546 INFO L93 Difference]: Finished difference Result 21916 states and 26121 transitions. [2020-10-14 22:30:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:29,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-14 22:30:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:29,594 INFO L225 Difference]: With dead ends: 21916 [2020-10-14 22:30:29,594 INFO L226 Difference]: Without dead ends: 12505 [2020-10-14 22:30:29,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2020-10-14 22:30:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 12469. [2020-10-14 22:30:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12469 states. [2020-10-14 22:30:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12469 states to 12469 states and 14721 transitions. [2020-10-14 22:30:29,892 INFO L78 Accepts]: Start accepts. Automaton has 12469 states and 14721 transitions. Word has length 336 [2020-10-14 22:30:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:29,893 INFO L479 AbstractCegarLoop]: Abstraction has 12469 states and 14721 transitions. [2020-10-14 22:30:29,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:30:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12469 states and 14721 transitions. [2020-10-14 22:30:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 22:30:29,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:29,904 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:30:29,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:30:29,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:29,905 INFO L82 PathProgramCache]: Analyzing trace with hash 132998112, now seen corresponding path program 1 times [2020-10-14 22:30:29,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:29,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086605698] [2020-10-14 22:30:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-14 22:30:35,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 22:30:35,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:30:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:30:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:35,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:30:35,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:35,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:35,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:30:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:30:35,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 22:30:35,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:30:35,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:35,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:30:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:30:35,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 22:30:35,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:30:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:30:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:35,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:30:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:30:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 320 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:30:36,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086605698] [2020-10-14 22:30:36,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:36,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:30:36,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778387614] [2020-10-14 22:30:36,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:30:36,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:36,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:30:36,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:36,051 INFO L87 Difference]: Start difference. First operand 12469 states and 14721 transitions. Second operand 7 states.