/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:54:07,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:54:07,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:54:07,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:54:07,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:54:07,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:54:07,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:54:07,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:54:07,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:54:07,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:54:07,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:54:07,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:54:07,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:54:07,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:54:07,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:54:07,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:54:07,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:54:07,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:54:07,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:54:07,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:54:07,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:54:07,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:54:07,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:54:07,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:54:07,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:54:07,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:54:07,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:54:07,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:54:07,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:54:07,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:54:07,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:54:07,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:54:07,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:54:07,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:54:07,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:54:07,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:54:07,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:54:07,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:54:07,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:54:07,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:54:07,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:54:07,560 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 03:54:07,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:54:07,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:54:07,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:54:07,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:54:07,593 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:54:07,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:54:07,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:54:07,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:54:07,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:54:07,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:54:07,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:54:07,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:54:07,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:54:07,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:54:07,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:54:07,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:54:07,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:54:07,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:54:07,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:54:07,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:54:07,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:54:07,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:54:07,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:54:07,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:54:07,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:54:07,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:54:07,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:54:07,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:54:07,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:54:07,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:54:07,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:54:07,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:54:07,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:54:07,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:54:07,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:54:07,924 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-14 03:54:07,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecec14a7c/fc291e7cc29648a686e2d38355841c11/FLAGa96ba55f5 [2020-10-14 03:54:08,724 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:54:08,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-14 03:54:08,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecec14a7c/fc291e7cc29648a686e2d38355841c11/FLAGa96ba55f5 [2020-10-14 03:54:08,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecec14a7c/fc291e7cc29648a686e2d38355841c11 [2020-10-14 03:54:08,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:54:08,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:54:08,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:54:08,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:54:08,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:54:08,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:54:08" (1/1) ... [2020-10-14 03:54:08,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:08, skipping insertion in model container [2020-10-14 03:54:08,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:54:08" (1/1) ... [2020-10-14 03:54:08,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:54:08,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:54:10,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:54:10,128 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:54:10,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:54:10,599 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:54:10,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10 WrapperNode [2020-10-14 03:54:10,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:54:10,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:54:10,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:54:10,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:54:10,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (1/1) ... [2020-10-14 03:54:10,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (1/1) ... [2020-10-14 03:54:10,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (1/1) ... [2020-10-14 03:54:10,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (1/1) ... [2020-10-14 03:54:10,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (1/1) ... [2020-10-14 03:54:10,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (1/1) ... [2020-10-14 03:54:10,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (1/1) ... [2020-10-14 03:54:10,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:54:10,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:54:10,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:54:10,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:54:10,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (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 03:54:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:54:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:54:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:54:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:54:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:54:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:54:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:54:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:54:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:54:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:54:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:54:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:54:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:54:21,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:54:21,565 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:54:21,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:21 BoogieIcfgContainer [2020-10-14 03:54:21,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:54:21,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:54:21,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:54:21,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:54:21,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:54:08" (1/3) ... [2020-10-14 03:54:21,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3dcb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:21, skipping insertion in model container [2020-10-14 03:54:21,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:10" (2/3) ... [2020-10-14 03:54:21,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3dcb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:21, skipping insertion in model container [2020-10-14 03:54:21,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:21" (3/3) ... [2020-10-14 03:54:21,592 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label03.c [2020-10-14 03:54:21,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:54:21,616 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:54:21,630 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:54:21,659 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:54:21,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:54:21,659 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:54:21,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:54:21,659 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:54:21,660 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:54:21,660 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:54:21,660 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:54:21,691 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:54:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 03:54:21,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:21,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:54:21,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1421926551, now seen corresponding path program 1 times [2020-10-14 03:54:21,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:21,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101503175] [2020-10-14 03:54:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:22,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 03:54:22,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:22,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 03:54:22,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:22,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:54:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:54:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 03:54:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:54:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:22,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:22,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:22,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:54:22,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:22,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:22,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:54:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:22,588 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 03:54:22,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101503175] [2020-10-14 03:54:22,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:54:22,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:54:22,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104289987] [2020-10-14 03:54:22,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:54:22,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:22,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:54:22,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:54:22,618 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:54:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:54:35,087 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 03:54:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:54:35,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 03:54:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:54:35,114 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 03:54:35,115 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 03:54:35,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 03:54:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 03:54:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 03:54:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 03:54:35,247 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 55 [2020-10-14 03:54:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:54:35,247 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 03:54:35,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:54:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 03:54:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 03:54:35,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:35,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:35,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:54:35,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:35,256 INFO L82 PathProgramCache]: Analyzing trace with hash -775740193, now seen corresponding path program 1 times [2020-10-14 03:54:35,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:35,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902979360] [2020-10-14 03:54:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:36,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:36,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 03:54:36,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:54:36,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-14 03:54:36,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:36,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 03:54:36,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:54:36,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 03:54:36,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:54:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:36,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:36,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:36,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:54:36,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:36,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:54:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:54:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:36,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:36,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:54:36,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:54:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-14 03:54:36,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:54:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:54:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:54:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 03:54:36,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902979360] [2020-10-14 03:54:36,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:54:36,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:54:36,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209009198] [2020-10-14 03:54:36,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:54:36,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:36,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:54:36,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:54:36,633 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 6 states. [2020-10-14 03:54:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:54:47,469 INFO L93 Difference]: Finished difference Result 2451 states and 3903 transitions. [2020-10-14 03:54:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:54:47,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-10-14 03:54:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:54:47,479 INFO L225 Difference]: With dead ends: 2451 [2020-10-14 03:54:47,479 INFO L226 Difference]: Without dead ends: 1466 [2020-10-14 03:54:47,482 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 03:54:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-14 03:54:47,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1452. [2020-10-14 03:54:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-14 03:54:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1972 transitions. [2020-10-14 03:54:47,534 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1972 transitions. Word has length 126 [2020-10-14 03:54:47,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:54:47,535 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1972 transitions. [2020-10-14 03:54:47,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:54:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1972 transitions. [2020-10-14 03:54:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 03:54:47,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:47,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:47,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:54:47,541 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:47,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1672472177, now seen corresponding path program 1 times [2020-10-14 03:54:47,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:47,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255856625] [2020-10-14 03:54:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 03:54:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:54:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-14 03:54:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:48,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:54:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:54:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 03:54:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:48,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:54:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:48,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:54:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:54:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:54:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:54:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:48,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:48,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:54:48,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:54:48,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:48,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:54:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:54:48,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255856625] [2020-10-14 03:54:48,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:54:48,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:54:48,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503959678] [2020-10-14 03:54:48,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:54:48,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:48,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:54:48,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:48,933 INFO L87 Difference]: Start difference. First operand 1452 states and 1972 transitions. Second operand 5 states. [2020-10-14 03:55:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:02,913 INFO L93 Difference]: Finished difference Result 3378 states and 4873 transitions. [2020-10-14 03:55:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:02,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-14 03:55:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:02,929 INFO L225 Difference]: With dead ends: 3378 [2020-10-14 03:55:02,929 INFO L226 Difference]: Without dead ends: 2365 [2020-10-14 03:55:02,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-10-14 03:55:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2355. [2020-10-14 03:55:02,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-10-14 03:55:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3069 transitions. [2020-10-14 03:55:03,003 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3069 transitions. Word has length 129 [2020-10-14 03:55:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:03,004 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 3069 transitions. [2020-10-14 03:55:03,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3069 transitions. [2020-10-14 03:55:03,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 03:55:03,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:03,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:03,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:55:03,010 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:03,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:03,010 INFO L82 PathProgramCache]: Analyzing trace with hash -69218638, now seen corresponding path program 1 times [2020-10-14 03:55:03,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:03,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967229551] [2020-10-14 03:55:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:05,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:05,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 03:55:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:55:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-10-14 03:55:05,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:05,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 03:55:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 03:55:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:55:05,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:05,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:05,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:05,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:55:05,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 03:55:05,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:05,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:55:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:05,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967229551] [2020-10-14 03:55:05,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:05,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:05,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607444827] [2020-10-14 03:55:05,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:05,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:05,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:05,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:05,720 INFO L87 Difference]: Start difference. First operand 2355 states and 3069 transitions. Second operand 5 states. [2020-10-14 03:55:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:20,263 INFO L93 Difference]: Finished difference Result 6055 states and 8200 transitions. [2020-10-14 03:55:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:20,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-14 03:55:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:20,289 INFO L225 Difference]: With dead ends: 6055 [2020-10-14 03:55:20,289 INFO L226 Difference]: Without dead ends: 4139 [2020-10-14 03:55:20,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2020-10-14 03:55:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4131. [2020-10-14 03:55:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4131 states. [2020-10-14 03:55:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 5278 transitions. [2020-10-14 03:55:20,416 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 5278 transitions. Word has length 164 [2020-10-14 03:55:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:20,418 INFO L479 AbstractCegarLoop]: Abstraction has 4131 states and 5278 transitions. [2020-10-14 03:55:20,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 5278 transitions. [2020-10-14 03:55:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 03:55:20,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:20,424 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:55:20,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:55:20,424 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash 958842975, now seen corresponding path program 1 times [2020-10-14 03:55:20,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:20,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758271929] [2020-10-14 03:55:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:20,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:25,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 03:55:25,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:55:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 03:55:25,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:25,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:55:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:55:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:25,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:25,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:25,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:55:25,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:25,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:25,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:25,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:25,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:55:25,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:25,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 03:55:25,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:25,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:55:25,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 03:55:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:25,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:25,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:55:25,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:55:25,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:25,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:55:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:55:25,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:55:25,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758271929] [2020-10-14 03:55:25,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:25,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:55:25,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047723424] [2020-10-14 03:55:25,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:55:25,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:25,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:55:25,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:55:25,973 INFO L87 Difference]: Start difference. First operand 4131 states and 5278 transitions. Second operand 7 states. [2020-10-14 03:55:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:39,548 INFO L93 Difference]: Finished difference Result 9642 states and 12705 transitions. [2020-10-14 03:55:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:55:39,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-14 03:55:39,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:39,571 INFO L225 Difference]: With dead ends: 9642 [2020-10-14 03:55:39,572 INFO L226 Difference]: Without dead ends: 5056 [2020-10-14 03:55:39,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:55:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2020-10-14 03:55:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 4610. [2020-10-14 03:55:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4610 states. [2020-10-14 03:55:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 5502 transitions. [2020-10-14 03:55:39,710 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 5502 transitions. Word has length 204 [2020-10-14 03:55:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:39,711 INFO L479 AbstractCegarLoop]: Abstraction has 4610 states and 5502 transitions. [2020-10-14 03:55:39,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:55:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 5502 transitions. [2020-10-14 03:55:39,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 03:55:39,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:39,715 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, 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, 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 03:55:39,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:55:39,715 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:39,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:39,716 INFO L82 PathProgramCache]: Analyzing trace with hash -706440303, now seen corresponding path program 1 times [2020-10-14 03:55:39,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:39,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728197372] [2020-10-14 03:55:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:40,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:44,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 03:55:44,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:55:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4419 [2020-10-14 03:55:44,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:44,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 03:55:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 03:55:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:44,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:55:44,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:44,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:44,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:55:44,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:55:44,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:44,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:55:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:44,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:44,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:44,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:55:44,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:55:44,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:44,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:55:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:55:44,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728197372] [2020-10-14 03:55:44,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:44,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:44,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418855012] [2020-10-14 03:55:44,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:44,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:44,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:44,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:44,550 INFO L87 Difference]: Start difference. First operand 4610 states and 5502 transitions. Second operand 5 states. [2020-10-14 03:55:56,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:56,914 INFO L93 Difference]: Finished difference Result 11415 states and 13957 transitions. [2020-10-14 03:55:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:56,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 03:55:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:56,950 INFO L225 Difference]: With dead ends: 11415 [2020-10-14 03:55:56,951 INFO L226 Difference]: Without dead ends: 6810 [2020-10-14 03:55:56,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 03:55:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2020-10-14 03:55:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 6357. [2020-10-14 03:55:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6357 states. [2020-10-14 03:55:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 7503 transitions. [2020-10-14 03:55:57,122 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 7503 transitions. Word has length 217 [2020-10-14 03:55:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:57,122 INFO L479 AbstractCegarLoop]: Abstraction has 6357 states and 7503 transitions. [2020-10-14 03:55:57,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 7503 transitions. [2020-10-14 03:55:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 03:55:57,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:57,127 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:55:57,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:55:57,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash -662062714, now seen corresponding path program 1 times [2020-10-14 03:55:57,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:57,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843453379] [2020-10-14 03:55:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:02,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:02,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:56:02,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:56:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 03:56:02,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:02,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:56:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 03:56:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:02,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:02,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:02,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:02,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:56:02,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:02,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:02,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:02,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:02,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:56:02,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:02,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:02,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:02,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:56:02,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:56:02,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:02,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:02,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:56:02,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 03:56:02,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843453379] [2020-10-14 03:56:02,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:02,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:56:02,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868788218] [2020-10-14 03:56:02,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:56:02,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:56:02,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:56:02,669 INFO L87 Difference]: Start difference. First operand 6357 states and 7503 transitions. Second operand 5 states. [2020-10-14 03:56:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:17,643 INFO L93 Difference]: Finished difference Result 15406 states and 18513 transitions. [2020-10-14 03:56:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:17,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-14 03:56:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:17,696 INFO L225 Difference]: With dead ends: 15406 [2020-10-14 03:56:17,696 INFO L226 Difference]: Without dead ends: 9055 [2020-10-14 03:56:17,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:56:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9055 states. [2020-10-14 03:56:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9055 to 8174. [2020-10-14 03:56:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8174 states. [2020-10-14 03:56:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 9785 transitions. [2020-10-14 03:56:17,930 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 9785 transitions. Word has length 228 [2020-10-14 03:56:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:17,930 INFO L479 AbstractCegarLoop]: Abstraction has 8174 states and 9785 transitions. [2020-10-14 03:56:17,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:56:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 9785 transitions. [2020-10-14 03:56:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 03:56:17,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:17,938 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, 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, 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] [2020-10-14 03:56:17,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:56:17,938 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash 8243234, now seen corresponding path program 1 times [2020-10-14 03:56:17,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:17,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592230277] [2020-10-14 03:56:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:18,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 03:56:18,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-14 03:56:18,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:18,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:56:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:56:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:18,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:18,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:18,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:18,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:56:18,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:18,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:18,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:18,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:18,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:56:18,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:18,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:19,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:19,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:19,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:56:19,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 03:56:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:19,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:56:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:56:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:19,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:19,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:56:19,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 03:56:19,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:19,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:56:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:56:19,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592230277] [2020-10-14 03:56:19,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:19,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:19,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000117251] [2020-10-14 03:56:19,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:19,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:19,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:19,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:19,653 INFO L87 Difference]: Start difference. First operand 8174 states and 9785 transitions. Second operand 7 states. [2020-10-14 03:56:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:43,712 INFO L93 Difference]: Finished difference Result 21472 states and 26317 transitions. [2020-10-14 03:56:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:56:43,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-14 03:56:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:43,765 INFO L225 Difference]: With dead ends: 21472 [2020-10-14 03:56:43,765 INFO L226 Difference]: Without dead ends: 12804 [2020-10-14 03:56:43,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:56:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12804 states. [2020-10-14 03:56:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12804 to 11011. [2020-10-14 03:56:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11011 states. [2020-10-14 03:56:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11011 states to 11011 states and 13369 transitions. [2020-10-14 03:56:44,073 INFO L78 Accepts]: Start accepts. Automaton has 11011 states and 13369 transitions. Word has length 299 [2020-10-14 03:56:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:44,074 INFO L479 AbstractCegarLoop]: Abstraction has 11011 states and 13369 transitions. [2020-10-14 03:56:44,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:56:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 11011 states and 13369 transitions. [2020-10-14 03:56:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 03:56:44,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:44,085 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:44,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:56:44,085 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash 58087890, now seen corresponding path program 1 times [2020-10-14 03:56:44,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:44,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017927330] [2020-10-14 03:56:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:44,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 03:56:46,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:56:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-14 03:56:46,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:56:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:56:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:56:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:46,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:56:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:56:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 03:56:46,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:56:46,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 03:56:46,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:56:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:46,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:56:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:56:46,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 03:56:46,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:56:46,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:56:47,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017927330] [2020-10-14 03:56:47,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:47,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:47,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958953798] [2020-10-14 03:56:47,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:47,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:47,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:47,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:47,063 INFO L87 Difference]: Start difference. First operand 11011 states and 13369 transitions. Second operand 7 states. [2020-10-14 03:57:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:03,257 INFO L93 Difference]: Finished difference Result 27885 states and 34891 transitions. [2020-10-14 03:57:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:57:03,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-14 03:57:03,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:03,331 INFO L225 Difference]: With dead ends: 27885 [2020-10-14 03:57:03,332 INFO L226 Difference]: Without dead ends: 16440 [2020-10-14 03:57:03,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:57:03,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2020-10-14 03:57:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 15508. [2020-10-14 03:57:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15508 states. [2020-10-14 03:57:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15508 states to 15508 states and 18710 transitions. [2020-10-14 03:57:03,763 INFO L78 Accepts]: Start accepts. Automaton has 15508 states and 18710 transitions. Word has length 304 [2020-10-14 03:57:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:03,764 INFO L479 AbstractCegarLoop]: Abstraction has 15508 states and 18710 transitions. [2020-10-14 03:57:03,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 15508 states and 18710 transitions. [2020-10-14 03:57:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 03:57:03,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:03,774 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, 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, 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 03:57:03,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:57:03,774 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash -885718644, now seen corresponding path program 1 times [2020-10-14 03:57:03,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:03,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075010001] [2020-10-14 03:57:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:07,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:07,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 03:57:07,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:57:07,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3538 [2020-10-14 03:57:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:07,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:57:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:57:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:07,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:07,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:07,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:57:07,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:07,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:07,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:07,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:07,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:07,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:07,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:57:07,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:07,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:57:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:07,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:07,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:07,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:57:07,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 03:57:07,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:07,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:57:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:08,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 03:57:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:08,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:57:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:57:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:08,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 03:57:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 232 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 03:57:08,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075010001] [2020-10-14 03:57:08,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:08,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:57:08,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690411224] [2020-10-14 03:57:08,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:57:08,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:08,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:57:08,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:57:08,611 INFO L87 Difference]: Start difference. First operand 15508 states and 18710 transitions. Second operand 7 states. [2020-10-14 03:57:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:26,877 INFO L93 Difference]: Finished difference Result 32867 states and 39663 transitions. [2020-10-14 03:57:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:57:26,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-14 03:57:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:26,940 INFO L225 Difference]: With dead ends: 32867 [2020-10-14 03:57:26,941 INFO L226 Difference]: Without dead ends: 17365 [2020-10-14 03:57:26,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:57:27,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17365 states. [2020-10-14 03:57:27,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17365 to 17332. [2020-10-14 03:57:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17332 states. [2020-10-14 03:57:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17332 states to 17332 states and 20867 transitions. [2020-10-14 03:57:27,401 INFO L78 Accepts]: Start accepts. Automaton has 17332 states and 20867 transitions. Word has length 322 [2020-10-14 03:57:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:27,402 INFO L479 AbstractCegarLoop]: Abstraction has 17332 states and 20867 transitions. [2020-10-14 03:57:27,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 17332 states and 20867 transitions. [2020-10-14 03:57:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-14 03:57:27,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:27,417 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, 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, 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 03:57:27,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:57:27,418 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:27,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1392041993, now seen corresponding path program 1 times [2020-10-14 03:57:27,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:27,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938213880] [2020-10-14 03:57:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-14 03:57:28,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-14 03:57:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:28,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:57:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:57:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:28,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:28,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:57:28,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:28,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:28,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:28,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:28,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:28,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:57:28,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:28,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:28,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:28,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:57:28,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:28,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 03:57:28,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:28,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:57:28,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:28,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:57:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:57:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 03:57:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:28,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:57:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:57:29,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938213880] [2020-10-14 03:57:29,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:29,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:57:29,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457203290] [2020-10-14 03:57:29,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:57:29,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:29,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:57:29,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:57:29,023 INFO L87 Difference]: Start difference. First operand 17332 states and 20867 transitions. Second operand 7 states. [2020-10-14 03:57:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:56,739 INFO L93 Difference]: Finished difference Result 45787 states and 55416 transitions. [2020-10-14 03:57:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:57:56,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-14 03:57:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:56,877 INFO L225 Difference]: With dead ends: 45787 [2020-10-14 03:57:56,878 INFO L226 Difference]: Without dead ends: 28461 [2020-10-14 03:57:56,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:57:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28461 states. [2020-10-14 03:57:57,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28461 to 27941. [2020-10-14 03:57:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27941 states. [2020-10-14 03:57:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27941 states to 27941 states and 33525 transitions. [2020-10-14 03:57:57,672 INFO L78 Accepts]: Start accepts. Automaton has 27941 states and 33525 transitions. Word has length 331 [2020-10-14 03:57:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:57,673 INFO L479 AbstractCegarLoop]: Abstraction has 27941 states and 33525 transitions. [2020-10-14 03:57:57,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 27941 states and 33525 transitions. [2020-10-14 03:57:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-14 03:57:57,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:57,689 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, 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, 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] [2020-10-14 03:57:57,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:57:57,690 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:57,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:57,690 INFO L82 PathProgramCache]: Analyzing trace with hash -325376015, now seen corresponding path program 1 times [2020-10-14 03:57:57,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:57,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295996558] [2020-10-14 03:57:57,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:00,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:00,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 03:58:00,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:58:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2689 [2020-10-14 03:58:00,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:00,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:58:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 03:58:00,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:00,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:00,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:00,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:00,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:58:00,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 03:58:00,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:00,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:58:00,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:58:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking...