/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/Problem12_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:45:36,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:45:36,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:45:36,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:45:36,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:45:36,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:45:36,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:45:36,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:45:36,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:45:36,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:45:36,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:45:36,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:45:36,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:45:36,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:45:36,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:45:36,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:45:36,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:45:36,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:45:36,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:45:36,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:45:36,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:45:36,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:45:36,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:45:36,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:45:36,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:45:36,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:45:36,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:45:36,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:45:36,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:45:36,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:45:36,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:45:36,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:45:36,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:45:36,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:45:36,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:45:36,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:45:36,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:45:36,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:45:36,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:45:36,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:45:36,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:45:36,660 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 02:45:36,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:45:36,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:45:36,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:45:36,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:45:36,684 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:45:36,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:45:36,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:45:36,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:45:36,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:45:36,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:45:36,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:45:36,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:45:36,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:45:36,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:45:36,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:45:36,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:45:36,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:45:36,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:45:36,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:45:36,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:45:36,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:45:36,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:45:36,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:45:36,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:45:36,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:45:36,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:45:36,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:45:36,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:45:36,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:45:36,689 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 02:45:37,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:45:37,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:45:37,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:45:37,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:45:37,093 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:45:37,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2020-10-14 02:45:37,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64a78bbcd/7802527476fc49e7b3c45de5773ce05b/FLAG9c902e755 [2020-10-14 02:45:38,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:45:38,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2020-10-14 02:45:38,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64a78bbcd/7802527476fc49e7b3c45de5773ce05b/FLAG9c902e755 [2020-10-14 02:45:38,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64a78bbcd/7802527476fc49e7b3c45de5773ce05b [2020-10-14 02:45:38,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:45:38,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:45:38,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:45:38,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:45:38,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:45:38,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:45:38" (1/1) ... [2020-10-14 02:45:38,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be73ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:38, skipping insertion in model container [2020-10-14 02:45:38,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:45:38" (1/1) ... [2020-10-14 02:45:38,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:45:38,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:45:40,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:45:40,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:45:41,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:45:41,559 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:45:41,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41 WrapperNode [2020-10-14 02:45:41,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:45:41,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:45:41,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:45:41,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:45:41,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (1/1) ... [2020-10-14 02:45:41,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (1/1) ... [2020-10-14 02:45:41,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (1/1) ... [2020-10-14 02:45:41,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (1/1) ... [2020-10-14 02:45:41,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (1/1) ... [2020-10-14 02:45:41,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (1/1) ... [2020-10-14 02:45:41,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (1/1) ... [2020-10-14 02:45:41,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:45:41,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:45:41,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:45:41,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:45:41,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (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 02:45:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:45:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:45:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:45:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:45:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:45:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:45:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:45:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:45:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:45:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:45:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:45:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:45:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:45:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:45:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:45:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:45:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:45:48,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:45:48,012 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:45:48,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:45:48 BoogieIcfgContainer [2020-10-14 02:45:48,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:45:48,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:45:48,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:45:48,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:45:48,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:45:38" (1/3) ... [2020-10-14 02:45:48,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143452e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:45:48, skipping insertion in model container [2020-10-14 02:45:48,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:41" (2/3) ... [2020-10-14 02:45:48,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143452e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:45:48, skipping insertion in model container [2020-10-14 02:45:48,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:45:48" (3/3) ... [2020-10-14 02:45:48,039 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label15.c [2020-10-14 02:45:48,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:45:48,065 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:45:48,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:45:48,123 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:45:48,123 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:45:48,123 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:45:48,123 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:45:48,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:45:48,124 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:45:48,124 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:45:48,124 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:45:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:45:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 02:45:48,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:48,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:45:48,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:48,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1064368205, now seen corresponding path program 1 times [2020-10-14 02:45:48,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:48,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094069047] [2020-10-14 02:45:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:48,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:48,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 02:45:48,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-14 02:45:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:45:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:45:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 02:45:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:45:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:49,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 02:45:49,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:49,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:45:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:49,132 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 02:45:49,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094069047] [2020-10-14 02:45:49,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:45:49,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:45:49,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804325645] [2020-10-14 02:45:49,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:45:49,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:49,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:45:49,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:45:49,170 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:45:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:59,721 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:45:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:45:59,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 02:45:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:59,764 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:45:59,764 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:45:59,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:45:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:45:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:45:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:46:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:46:00,008 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 60 [2020-10-14 02:46:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:00,010 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:46:00,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:46:00,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:46:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 02:46:00,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:00,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 02:46:00,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:46:00,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2071374165, now seen corresponding path program 1 times [2020-10-14 02:46:00,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:00,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544152596] [2020-10-14 02:46:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:01,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:01,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 02:46:01,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:46:01,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-14 02:46:01,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:01,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:46:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 02:46:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 02:46:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:01,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:01,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:01,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:01,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:01,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:46:01,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:01,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:01,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:01,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:01,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:01,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:01,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:46:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 02:46:01,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:01,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:46:01,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:02,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544152596] [2020-10-14 02:46:02,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:02,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:02,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684227896] [2020-10-14 02:46:02,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:02,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:02,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:02,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:02,022 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:46:11,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:11,684 INFO L93 Difference]: Finished difference Result 4671 states and 7648 transitions. [2020-10-14 02:46:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:11,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-14 02:46:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:11,705 INFO L225 Difference]: With dead ends: 4671 [2020-10-14 02:46:11,706 INFO L226 Difference]: Without dead ends: 3124 [2020-10-14 02:46:11,711 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 02:46:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-14 02:46:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3111. [2020-10-14 02:46:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-14 02:46:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4441 transitions. [2020-10-14 02:46:11,802 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4441 transitions. Word has length 135 [2020-10-14 02:46:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:11,804 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4441 transitions. [2020-10-14 02:46:11,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4441 transitions. [2020-10-14 02:46:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 02:46:11,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:11,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:11,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:46:11,807 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1449856243, now seen corresponding path program 1 times [2020-10-14 02:46:11,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:11,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416576352] [2020-10-14 02:46:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:13,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:13,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:46:13,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:46:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-10-14 02:46:13,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:13,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:46:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 02:46:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:13,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:13,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:13,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:13,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:13,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:46:13,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:13,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:13,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:46:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 02:46:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:46:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:13,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416576352] [2020-10-14 02:46:13,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:13,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:13,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826340586] [2020-10-14 02:46:13,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:13,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:13,601 INFO L87 Difference]: Start difference. First operand 3111 states and 4441 transitions. Second operand 5 states. [2020-10-14 02:46:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:23,674 INFO L93 Difference]: Finished difference Result 9351 states and 13540 transitions. [2020-10-14 02:46:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:23,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 02:46:23,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:23,722 INFO L225 Difference]: With dead ends: 9351 [2020-10-14 02:46:23,722 INFO L226 Difference]: Without dead ends: 6246 [2020-10-14 02:46:23,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 02:46:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2020-10-14 02:46:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 6237. [2020-10-14 02:46:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6237 states. [2020-10-14 02:46:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6237 states to 6237 states and 8641 transitions. [2020-10-14 02:46:23,948 INFO L78 Accepts]: Start accepts. Automaton has 6237 states and 8641 transitions. Word has length 139 [2020-10-14 02:46:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:23,949 INFO L479 AbstractCegarLoop]: Abstraction has 6237 states and 8641 transitions. [2020-10-14 02:46:23,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6237 states and 8641 transitions. [2020-10-14 02:46:23,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 02:46:23,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:23,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:23,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:46:23,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:23,959 INFO L82 PathProgramCache]: Analyzing trace with hash -561911383, now seen corresponding path program 1 times [2020-10-14 02:46:23,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:23,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282708996] [2020-10-14 02:46:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:24,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:25,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:25,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 02:46:25,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:46:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-10-14 02:46:25,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:25,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 02:46:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 02:46:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:25,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:25,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:25,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:46:25,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:25,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:25,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:25,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:46:25,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 02:46:25,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:25,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:46:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:25,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282708996] [2020-10-14 02:46:25,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:25,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:25,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037684708] [2020-10-14 02:46:25,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:25,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:25,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:25,570 INFO L87 Difference]: Start difference. First operand 6237 states and 8641 transitions. Second operand 5 states. [2020-10-14 02:46:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:37,309 INFO L93 Difference]: Finished difference Result 18684 states and 26321 transitions. [2020-10-14 02:46:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:37,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 02:46:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:37,376 INFO L225 Difference]: With dead ends: 18684 [2020-10-14 02:46:37,377 INFO L226 Difference]: Without dead ends: 12453 [2020-10-14 02:46:37,394 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 02:46:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12453 states. [2020-10-14 02:46:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12453 to 12444. [2020-10-14 02:46:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12444 states. [2020-10-14 02:46:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12444 states to 12444 states and 16249 transitions. [2020-10-14 02:46:37,730 INFO L78 Accepts]: Start accepts. Automaton has 12444 states and 16249 transitions. Word has length 173 [2020-10-14 02:46:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:37,731 INFO L479 AbstractCegarLoop]: Abstraction has 12444 states and 16249 transitions. [2020-10-14 02:46:37,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 12444 states and 16249 transitions. [2020-10-14 02:46:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 02:46:37,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:37,740 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, 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] [2020-10-14 02:46:37,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:46:37,741 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2009762817, now seen corresponding path program 1 times [2020-10-14 02:46:37,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:37,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349208952] [2020-10-14 02:46:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:38,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:41,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:41,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 02:46:41,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:46:41,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4154 [2020-10-14 02:46:41,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:41,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:46:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:46:41,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:42,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:46:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:42,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:46:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:42,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:46:42,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:42,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:46:42,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:42,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:46:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:46:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:42,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:42,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:46:42,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:42,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 02:46:42,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:42,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:46:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:46:42,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349208952] [2020-10-14 02:46:42,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:42,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:46:42,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331727210] [2020-10-14 02:46:42,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:46:42,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:42,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:46:42,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:42,330 INFO L87 Difference]: Start difference. First operand 12444 states and 16249 transitions. Second operand 7 states. [2020-10-14 02:46:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:59,679 INFO L93 Difference]: Finished difference Result 37680 states and 51313 transitions. [2020-10-14 02:46:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:46:59,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-14 02:46:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:59,803 INFO L225 Difference]: With dead ends: 37680 [2020-10-14 02:46:59,804 INFO L226 Difference]: Without dead ends: 25242 [2020-10-14 02:46:59,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:46:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25242 states. [2020-10-14 02:47:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25242 to 25115. [2020-10-14 02:47:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25115 states. [2020-10-14 02:47:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25115 states to 25115 states and 32322 transitions. [2020-10-14 02:47:00,586 INFO L78 Accepts]: Start accepts. Automaton has 25115 states and 32322 transitions. Word has length 208 [2020-10-14 02:47:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:00,587 INFO L479 AbstractCegarLoop]: Abstraction has 25115 states and 32322 transitions. [2020-10-14 02:47:00,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:47:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 25115 states and 32322 transitions. [2020-10-14 02:47:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 02:47:00,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:00,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:00,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:47:00,594 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:00,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:00,595 INFO L82 PathProgramCache]: Analyzing trace with hash -69907751, now seen corresponding path program 1 times [2020-10-14 02:47:00,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:00,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424015969] [2020-10-14 02:47:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:00,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:01,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 02:47:01,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:47:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-14 02:47:01,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:01,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-14 02:47:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 02:47:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:02,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:02,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:02,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:47:02,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:02,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:02,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:02,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:47:02,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 02:47:02,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:02,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 02:47:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:47:02,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424015969] [2020-10-14 02:47:02,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:02,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:47:02,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795648176] [2020-10-14 02:47:02,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:47:02,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:47:02,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:02,357 INFO L87 Difference]: Start difference. First operand 25115 states and 32322 transitions. Second operand 5 states. [2020-10-14 02:47:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:14,094 INFO L93 Difference]: Finished difference Result 61954 states and 81826 transitions. [2020-10-14 02:47:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:47:14,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-14 02:47:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:14,266 INFO L225 Difference]: With dead ends: 61954 [2020-10-14 02:47:14,266 INFO L226 Difference]: Without dead ends: 36849 [2020-10-14 02:47:14,338 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 02:47:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36849 states. [2020-10-14 02:47:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36849 to 36061. [2020-10-14 02:47:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36061 states. [2020-10-14 02:47:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36061 states to 36061 states and 47209 transitions. [2020-10-14 02:47:16,498 INFO L78 Accepts]: Start accepts. Automaton has 36061 states and 47209 transitions. Word has length 213 [2020-10-14 02:47:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:16,499 INFO L479 AbstractCegarLoop]: Abstraction has 36061 states and 47209 transitions. [2020-10-14 02:47:16,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:47:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 36061 states and 47209 transitions. [2020-10-14 02:47:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 02:47:16,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:16,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:16,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:47:16,507 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:16,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1116337812, now seen corresponding path program 1 times [2020-10-14 02:47:16,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:16,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592165275] [2020-10-14 02:47:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:17,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:17,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 02:47:17,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:47:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-14 02:47:17,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:17,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-14 02:47:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 02:47:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:17,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:17,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:17,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:17,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:17,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:47:17,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:17,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:17,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:18,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:18,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 02:47:18,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:18,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 02:47:18,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:18,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 02:47:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:47:18,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592165275] [2020-10-14 02:47:18,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:18,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:47:18,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649712439] [2020-10-14 02:47:18,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:47:18,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:18,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:47:18,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:18,236 INFO L87 Difference]: Start difference. First operand 36061 states and 47209 transitions. Second operand 5 states. [2020-10-14 02:47:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:33,784 INFO L93 Difference]: Finished difference Result 90016 states and 121795 transitions. [2020-10-14 02:47:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:47:33,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-14 02:47:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:33,993 INFO L225 Difference]: With dead ends: 90016 [2020-10-14 02:47:33,994 INFO L226 Difference]: Without dead ends: 53965 [2020-10-14 02:47:34,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 02:47:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53965 states. [2020-10-14 02:47:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53965 to 53184. [2020-10-14 02:47:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53184 states. [2020-10-14 02:47:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53184 states to 53184 states and 69215 transitions. [2020-10-14 02:47:35,441 INFO L78 Accepts]: Start accepts. Automaton has 53184 states and 69215 transitions. Word has length 222 [2020-10-14 02:47:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:35,442 INFO L479 AbstractCegarLoop]: Abstraction has 53184 states and 69215 transitions. [2020-10-14 02:47:35,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:47:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 53184 states and 69215 transitions. [2020-10-14 02:47:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 02:47:35,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:35,462 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:35,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:47:35,462 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:35,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1725065615, now seen corresponding path program 1 times [2020-10-14 02:47:35,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:35,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545385540] [2020-10-14 02:47:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:40,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:40,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 02:47:40,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:47:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 02:47:40,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:40,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-14 02:47:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 02:47:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:47:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:40,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:40,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:40,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:40,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:47:40,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:40,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:40,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:40,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:47:40,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 02:47:40,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:40,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 02:47:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 02:47:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:40,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:41,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:41,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:47:41,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 02:47:41,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:41,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:47:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 02:47:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:47:41,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545385540] [2020-10-14 02:47:41,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:41,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:47:41,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868949902] [2020-10-14 02:47:41,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:47:41,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:41,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:47:41,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:47:41,195 INFO L87 Difference]: Start difference. First operand 53184 states and 69215 transitions. Second operand 7 states. [2020-10-14 02:48:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:04,144 INFO L93 Difference]: Finished difference Result 145602 states and 208013 transitions. [2020-10-14 02:48:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:48:04,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 02:48:04,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:04,635 INFO L225 Difference]: With dead ends: 145602 [2020-10-14 02:48:04,635 INFO L226 Difference]: Without dead ends: 92428 [2020-10-14 02:48:04,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:48:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92428 states. [2020-10-14 02:48:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92428 to 80859. [2020-10-14 02:48:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80859 states. [2020-10-14 02:48:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80859 states to 80859 states and 102786 transitions. [2020-10-14 02:48:07,427 INFO L78 Accepts]: Start accepts. Automaton has 80859 states and 102786 transitions. Word has length 300 [2020-10-14 02:48:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:07,428 INFO L479 AbstractCegarLoop]: Abstraction has 80859 states and 102786 transitions. [2020-10-14 02:48:07,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:48:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 80859 states and 102786 transitions. [2020-10-14 02:48:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 02:48:07,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:07,459 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:07,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:48:07,459 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:07,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:07,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1486100269, now seen corresponding path program 1 times [2020-10-14 02:48:07,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:07,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005110559] [2020-10-14 02:48:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 02:48:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:48:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 02:48:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:12,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:48:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 02:48:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:12,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:12,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:12,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:12,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:48:12,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:12,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:12,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:12,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:12,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:12,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:48:12,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 02:48:12,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:12,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:48:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-14 02:48:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:13,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 02:48:13,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 02:48:13,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:13,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:48:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:48:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:48:13,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005110559] [2020-10-14 02:48:13,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:13,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:48:13,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355423966] [2020-10-14 02:48:13,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:48:13,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:13,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:48:13,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:48:13,264 INFO L87 Difference]: Start difference. First operand 80859 states and 102786 transitions. Second operand 7 states. [2020-10-14 02:48:32,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:32,965 INFO L93 Difference]: Finished difference Result 189119 states and 251073 transitions. [2020-10-14 02:48:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:48:32,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 02:48:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:33,296 INFO L225 Difference]: With dead ends: 189119 [2020-10-14 02:48:33,297 INFO L226 Difference]: Without dead ends: 108270 [2020-10-14 02:48:33,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:48:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108270 states. [2020-10-14 02:48:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108270 to 105849. [2020-10-14 02:48:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105849 states. [2020-10-14 02:48:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105849 states to 105849 states and 131004 transitions. [2020-10-14 02:48:35,892 INFO L78 Accepts]: Start accepts. Automaton has 105849 states and 131004 transitions. Word has length 316 [2020-10-14 02:48:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:35,893 INFO L479 AbstractCegarLoop]: Abstraction has 105849 states and 131004 transitions. [2020-10-14 02:48:35,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:48:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 105849 states and 131004 transitions. [2020-10-14 02:48:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 02:48:35,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:35,910 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, 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, 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] [2020-10-14 02:48:35,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:48:35,911 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:35,912 INFO L82 PathProgramCache]: Analyzing trace with hash 331440139, now seen corresponding path program 1 times [2020-10-14 02:48:35,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:35,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189275739] [2020-10-14 02:48:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 02:48:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:48:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 02:48:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:40,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-14 02:48:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 02:48:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:41,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:41,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:48:41,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:41,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:41,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:41,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:48:41,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:48:41,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:41,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:41,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:48:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:41,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:41,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:48:41,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 02:48:41,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:41,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:48:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:48:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:41,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 02:48:41,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 02:48:41,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:41,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:48:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:48:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 02:48:41,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189275739] [2020-10-14 02:48:41,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:41,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:48:41,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622120398] [2020-10-14 02:48:41,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:48:41,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:41,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:48:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:48:41,651 INFO L87 Difference]: Start difference. First operand 105849 states and 131004 transitions. Second operand 8 states. [2020-10-14 02:49:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:05,926 INFO L93 Difference]: Finished difference Result 210935 states and 261706 transitions. [2020-10-14 02:49:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:49:05,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 335 [2020-10-14 02:49:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:06,213 INFO L225 Difference]: With dead ends: 210935 [2020-10-14 02:49:06,213 INFO L226 Difference]: Without dead ends: 105859 [2020-10-14 02:49:06,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:49:06,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105859 states. [2020-10-14 02:49:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105859 to 105838. [2020-10-14 02:49:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105838 states. [2020-10-14 02:49:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105838 states to 105838 states and 123670 transitions. [2020-10-14 02:49:08,072 INFO L78 Accepts]: Start accepts. Automaton has 105838 states and 123670 transitions. Word has length 335 [2020-10-14 02:49:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:08,073 INFO L479 AbstractCegarLoop]: Abstraction has 105838 states and 123670 transitions. [2020-10-14 02:49:08,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:49:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 105838 states and 123670 transitions. [2020-10-14 02:49:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2020-10-14 02:49:08,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:08,185 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:49:08,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:49:08,185 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:08,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1789871354, now seen corresponding path program 1 times [2020-10-14 02:49:08,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:08,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156728403] [2020-10-14 02:49:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking...