/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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:49:08,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:49:08,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:49:08,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:49:08,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:49:08,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:49:08,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:49:08,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:49:08,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:49:08,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:49:08,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:49:08,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:49:08,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:49:08,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:49:08,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:49:08,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:49:08,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:49:08,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:49:08,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:49:08,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:49:08,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:49:08,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:49:08,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:49:08,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:49:08,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:49:08,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:49:08,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:49:08,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:49:08,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:49:08,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:49:08,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:49:08,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:49:08,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:49:08,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:49:08,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:49:08,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:49:08,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:49:08,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:49:08,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:49:08,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:49:08,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:49:08,797 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 02:49:08,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:49:08,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:49:08,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:49:08,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:49:08,846 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:49:08,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:49:08,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:49:08,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:49:08,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:49:08,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:49:08,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:49:08,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:49:08,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:49:08,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:49:08,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:49:08,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:49:08,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:49:08,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:49:08,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:49:08,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:49:08,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:49:08,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:49:08,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:49:08,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:49:08,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:49:08,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:49:08,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:49:08,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:49:08,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:49:08,853 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 02:49:09,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:49:09,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:49:09,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:49:09,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:49:09,216 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:49:09,217 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2020-10-14 02:49:09,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82ad0855b/f229214f68b74c9fa770c0a2f02b324d/FLAG0bdb8046d [2020-10-14 02:49:10,133 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:49:10,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2020-10-14 02:49:10,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82ad0855b/f229214f68b74c9fa770c0a2f02b324d/FLAG0bdb8046d [2020-10-14 02:49:10,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82ad0855b/f229214f68b74c9fa770c0a2f02b324d [2020-10-14 02:49:10,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:49:10,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:49:10,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:49:10,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:49:10,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:49:10,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:49:10" (1/1) ... [2020-10-14 02:49:10,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49469cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:10, skipping insertion in model container [2020-10-14 02:49:10,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:49:10" (1/1) ... [2020-10-14 02:49:10,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:49:10,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:49:11,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:49:11,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:49:12,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:49:12,644 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:49:12,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12 WrapperNode [2020-10-14 02:49:12,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:49:12,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:49:12,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:49:12,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:49:12,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... [2020-10-14 02:49:12,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... [2020-10-14 02:49:12,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... [2020-10-14 02:49:12,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... [2020-10-14 02:49:12,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... [2020-10-14 02:49:12,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... [2020-10-14 02:49:12,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... [2020-10-14 02:49:12,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:49:12,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:49:12,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:49:12,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:49:12,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:49:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:49:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:49:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:49:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:49:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:49:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:49:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:49:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:49:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:49:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:49:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:49:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:49:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:49:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:49:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:49:18,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:49:18,689 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:49:18,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:49:18 BoogieIcfgContainer [2020-10-14 02:49:18,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:49:18,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:49:18,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:49:18,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:49:18,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:49:10" (1/3) ... [2020-10-14 02:49:18,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad48c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:49:18, skipping insertion in model container [2020-10-14 02:49:18,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:12" (2/3) ... [2020-10-14 02:49:18,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad48c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:49:18, skipping insertion in model container [2020-10-14 02:49:18,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:49:18" (3/3) ... [2020-10-14 02:49:18,710 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label28.c [2020-10-14 02:49:18,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:49:18,732 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:49:18,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:49:18,782 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:49:18,783 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:49:18,783 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:49:18,783 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:49:18,783 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:49:18,783 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:49:18,784 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:49:18,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:49:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:49:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 02:49:18,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:18,833 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] [2020-10-14 02:49:18,833 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash 732725797, now seen corresponding path program 1 times [2020-10-14 02:49:18,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:18,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875440582] [2020-10-14 02:49:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:19,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 02:49:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 02:49:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:19,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:49:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:49:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 02:49:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:49:19,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:19,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:19,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:19,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 02:49:19,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:19,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:49:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:19,537 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 02:49:19,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875440582] [2020-10-14 02:49:19,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:49:19,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:49:19,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069979663] [2020-10-14 02:49:19,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:49:19,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:19,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:49:19,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:49:19,567 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:49:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:27,934 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:49:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:49:27,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 02:49:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:27,985 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:49:27,985 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:49:28,001 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 02:49:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:49:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:49:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:49:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-14 02:49:28,261 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 26 [2020-10-14 02:49:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:28,262 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-14 02:49:28,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:49:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-14 02:49:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 02:49:28,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:28,271 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:49:28,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:49:28,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:28,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:28,272 INFO L82 PathProgramCache]: Analyzing trace with hash -240105607, now seen corresponding path program 1 times [2020-10-14 02:49:28,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:28,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025173043] [2020-10-14 02:49:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:29,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 02:49:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:49:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 02:49:29,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:29,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:49:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 02:49:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:49:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:29,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:29,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:29,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:29,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:49:29,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:29,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:29,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:29,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:49:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 02:49:29,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:49:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:49:29,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025173043] [2020-10-14 02:49:29,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:29,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:49:29,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697333363] [2020-10-14 02:49:29,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:29,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:29,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:29,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:29,529 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-14 02:49:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:37,731 INFO L93 Difference]: Finished difference Result 4668 states and 8256 transitions. [2020-10-14 02:49:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:49:37,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-14 02:49:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:37,762 INFO L225 Difference]: With dead ends: 4668 [2020-10-14 02:49:37,763 INFO L226 Difference]: Without dead ends: 3121 [2020-10-14 02:49:37,768 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 02:49:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-14 02:49:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3106. [2020-10-14 02:49:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-14 02:49:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5317 transitions. [2020-10-14 02:49:37,862 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5317 transitions. Word has length 95 [2020-10-14 02:49:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:37,863 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 5317 transitions. [2020-10-14 02:49:37,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:49:37,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5317 transitions. [2020-10-14 02:49:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 02:49:37,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:37,865 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:49:37,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:49:37,866 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:37,866 INFO L82 PathProgramCache]: Analyzing trace with hash -163504371, now seen corresponding path program 1 times [2020-10-14 02:49:37,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:37,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706876815] [2020-10-14 02:49:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:38,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:38,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:49:38,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:49:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-14 02:49:38,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:38,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:49:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 02:49:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:38,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:49:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:38,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:38,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:38,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:49:38,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:38,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 02:49:38,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:38,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:49:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:49:38,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706876815] [2020-10-14 02:49:38,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:38,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:49:38,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646908200] [2020-10-14 02:49:38,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:38,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:38,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:38,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:38,819 INFO L87 Difference]: Start difference. First operand 3106 states and 5317 transitions. Second operand 5 states. [2020-10-14 02:49:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:49,360 INFO L93 Difference]: Finished difference Result 9331 states and 16189 transitions. [2020-10-14 02:49:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:49:49,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 02:49:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:49,399 INFO L225 Difference]: With dead ends: 9331 [2020-10-14 02:49:49,399 INFO L226 Difference]: Without dead ends: 6231 [2020-10-14 02:49:49,409 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 02:49:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2020-10-14 02:49:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 6214. [2020-10-14 02:49:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-10-14 02:49:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 9386 transitions. [2020-10-14 02:49:49,619 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 9386 transitions. Word has length 101 [2020-10-14 02:49:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:49,625 INFO L479 AbstractCegarLoop]: Abstraction has 6214 states and 9386 transitions. [2020-10-14 02:49:49,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:49:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 9386 transitions. [2020-10-14 02:49:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 02:49:49,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:49,633 INFO L422 BasicCegarLoop]: trace histogram [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 02:49:49,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:49:49,633 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash 443929589, now seen corresponding path program 1 times [2020-10-14 02:49:49,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:49,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465781598] [2020-10-14 02:49:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:50,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:50,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 02:49:50,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:49:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-10-14 02:49:50,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:50,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 02:49:50,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 02:49:50,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:50,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:50,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:50,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:49:50,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:50,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:51,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:49:51,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:49:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:51,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:49:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:49:51,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465781598] [2020-10-14 02:49:51,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:51,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:49:51,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450628445] [2020-10-14 02:49:51,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:51,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:51,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:51,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:51,180 INFO L87 Difference]: Start difference. First operand 6214 states and 9386 transitions. Second operand 5 states. [2020-10-14 02:50:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:01,894 INFO L93 Difference]: Finished difference Result 18652 states and 28764 transitions. [2020-10-14 02:50:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:01,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 02:50:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:01,965 INFO L225 Difference]: With dead ends: 18652 [2020-10-14 02:50:01,966 INFO L226 Difference]: Without dead ends: 12444 [2020-10-14 02:50:01,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 02:50:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12444 states. [2020-10-14 02:50:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12444 to 12432. [2020-10-14 02:50:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12432 states. [2020-10-14 02:50:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 17530 transitions. [2020-10-14 02:50:02,355 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 17530 transitions. Word has length 145 [2020-10-14 02:50:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:02,357 INFO L479 AbstractCegarLoop]: Abstraction has 12432 states and 17530 transitions. [2020-10-14 02:50:02,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 17530 transitions. [2020-10-14 02:50:02,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 02:50:02,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:02,373 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:02,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:50:02,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:02,374 INFO L82 PathProgramCache]: Analyzing trace with hash -114146647, now seen corresponding path program 1 times [2020-10-14 02:50:02,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:02,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331753172] [2020-10-14 02:50:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:06,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:06,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-14 02:50:06,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:50:06,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4528 [2020-10-14 02:50:06,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:06,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 02:50:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 02:50:06,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:07,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:07,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:07,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:07,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:07,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:07,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:07,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:50:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 02:50:07,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:07,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:50:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:07,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 02:50:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:07,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 02:50:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-14 02:50:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:07,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 02:50:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:50:07,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331753172] [2020-10-14 02:50:07,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:07,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:50:07,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007673804] [2020-10-14 02:50:07,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:50:07,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:07,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:50:07,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:50:07,928 INFO L87 Difference]: Start difference. First operand 12432 states and 17530 transitions. Second operand 7 states. [2020-10-14 02:50:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:28,374 INFO L93 Difference]: Finished difference Result 36869 states and 57563 transitions. [2020-10-14 02:50:28,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:50:28,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-14 02:50:28,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:28,489 INFO L225 Difference]: With dead ends: 36869 [2020-10-14 02:50:28,489 INFO L226 Difference]: Without dead ends: 24443 [2020-10-14 02:50:28,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:50:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24443 states. [2020-10-14 02:50:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24443 to 24353. [2020-10-14 02:50:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24353 states. [2020-10-14 02:50:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24353 states to 24353 states and 35536 transitions. [2020-10-14 02:50:29,938 INFO L78 Accepts]: Start accepts. Automaton has 24353 states and 35536 transitions. Word has length 314 [2020-10-14 02:50:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:29,938 INFO L479 AbstractCegarLoop]: Abstraction has 24353 states and 35536 transitions. [2020-10-14 02:50:29,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:50:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24353 states and 35536 transitions. [2020-10-14 02:50:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-14 02:50:30,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:30,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:30,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:50:30,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:30,007 INFO L82 PathProgramCache]: Analyzing trace with hash -819036573, now seen corresponding path program 1 times [2020-10-14 02:50:30,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:30,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128391154] [2020-10-14 02:50:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:35,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-14 02:50:35,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:50:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 02:50:35,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:35,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:50:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 02:50:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 425 [2020-10-14 02:50:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:35,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:35,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:35,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:50:35,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:35,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:35,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:50:35,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 02:50:35,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:35,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:50:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 02:50:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:36,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-14 02:50:36,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-14 02:50:36,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:36,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:50:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-14 02:50:36,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:50:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:37,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:50:37,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 02:50:37,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:37,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:50:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:50:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:50:38,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128391154] [2020-10-14 02:50:38,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:38,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:50:38,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567914919] [2020-10-14 02:50:38,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:50:38,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:38,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:50:38,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:50:38,556 INFO L87 Difference]: Start difference. First operand 24353 states and 35536 transitions. Second operand 7 states. [2020-10-14 02:50:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:50,285 INFO L93 Difference]: Finished difference Result 48989 states and 73400 transitions. [2020-10-14 02:50:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:50:50,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-14 02:50:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:50,398 INFO L225 Difference]: With dead ends: 48989 [2020-10-14 02:50:50,398 INFO L226 Difference]: Without dead ends: 24646 [2020-10-14 02:50:50,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 02:50:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24646 states. [2020-10-14 02:50:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24646 to 24532. [2020-10-14 02:50:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24532 states. [2020-10-14 02:50:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24532 states to 24532 states and 33338 transitions. [2020-10-14 02:50:51,048 INFO L78 Accepts]: Start accepts. Automaton has 24532 states and 33338 transitions. Word has length 520 [2020-10-14 02:50:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:51,050 INFO L479 AbstractCegarLoop]: Abstraction has 24532 states and 33338 transitions. [2020-10-14 02:50:51,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:50:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24532 states and 33338 transitions. [2020-10-14 02:50:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-14 02:50:51,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:51,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:51,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:50:51,112 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash -2147205352, now seen corresponding path program 1 times [2020-10-14 02:50:51,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:51,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321358637] [2020-10-14 02:50:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:56,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:56,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-14 02:50:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:50:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 02:50:56,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:56,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 02:50:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 02:50:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:56,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:56,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:50:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:56,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:56,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 02:50:56,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 02:50:56,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:56,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:50:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:50:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 02:50:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-14 02:50:58,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:50:58,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-14 02:50:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-14 02:50:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:59,398 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-14 02:50:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:50:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:59,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:59,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:50:59,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 02:50:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:59,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 02:50:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:01,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321358637] [2020-10-14 02:51:01,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:01,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:01,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661325242] [2020-10-14 02:51:01,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:01,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:01,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:01,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:01,809 INFO L87 Difference]: Start difference. First operand 24532 states and 33338 transitions. Second operand 7 states. [2020-10-14 02:51:03,207 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-14 02:51:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:13,108 INFO L93 Difference]: Finished difference Result 49620 states and 69436 transitions. [2020-10-14 02:51:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:51:13,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-14 02:51:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:13,230 INFO L225 Difference]: With dead ends: 49620 [2020-10-14 02:51:13,230 INFO L226 Difference]: Without dead ends: 24979 [2020-10-14 02:51:13,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:51:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24979 states. [2020-10-14 02:51:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24979 to 24642. [2020-10-14 02:51:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24642 states. [2020-10-14 02:51:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24642 states to 24642 states and 33062 transitions. [2020-10-14 02:51:13,818 INFO L78 Accepts]: Start accepts. Automaton has 24642 states and 33062 transitions. Word has length 549 [2020-10-14 02:51:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:13,818 INFO L479 AbstractCegarLoop]: Abstraction has 24642 states and 33062 transitions. [2020-10-14 02:51:13,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 24642 states and 33062 transitions. [2020-10-14 02:51:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2020-10-14 02:51:13,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:13,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:51:13,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:51:13,894 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:13,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1384161855, now seen corresponding path program 1 times [2020-10-14 02:51:13,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:13,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130614363] [2020-10-14 02:51:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:14,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:17,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:19,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-14 02:51:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:51:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 02:51:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:19,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:51:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-14 02:51:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 425 [2020-10-14 02:51:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:19,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:19,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:19,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:19,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:19,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:19,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:19,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 02:51:19,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 02:51:19,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:19,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 02:51:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 02:51:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:21,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:21,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-14 02:51:21,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-14 02:51:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:21,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:51:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-14 02:51:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:51:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:21,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:21,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:51:21,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-14 02:51:21,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:21,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:51:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:51:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:22,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130614363] [2020-10-14 02:51:22,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:22,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:51:22,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794988800] [2020-10-14 02:51:22,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:51:22,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:51:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:51:22,696 INFO L87 Difference]: Start difference. First operand 24642 states and 33062 transitions. Second operand 8 states. [2020-10-14 02:51:55,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:55,136 INFO L93 Difference]: Finished difference Result 67831 states and 96021 transitions. [2020-10-14 02:51:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 02:51:55,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 582 [2020-10-14 02:51:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:55,362 INFO L225 Difference]: With dead ends: 67831 [2020-10-14 02:51:55,362 INFO L226 Difference]: Without dead ends: 43199 [2020-10-14 02:51:55,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:51:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43199 states. [2020-10-14 02:51:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43199 to 39903. [2020-10-14 02:51:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39903 states. [2020-10-14 02:51:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39903 states to 39903 states and 51229 transitions. [2020-10-14 02:51:56,677 INFO L78 Accepts]: Start accepts. Automaton has 39903 states and 51229 transitions. Word has length 582 [2020-10-14 02:51:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:56,679 INFO L479 AbstractCegarLoop]: Abstraction has 39903 states and 51229 transitions. [2020-10-14 02:51:56,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:51:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 39903 states and 51229 transitions. [2020-10-14 02:51:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-14 02:51:56,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:56,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:56,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:51:56,778 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash 355075907, now seen corresponding path program 1 times [2020-10-14 02:51:56,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:56,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889626129] [2020-10-14 02:51:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:01,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-14 02:52:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:52:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 02:52:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:01,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 02:52:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:52:01,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:02,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:02,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:52:02,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:02,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:02,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:52:02,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 02:52:02,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:02,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:52:02,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 02:52:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 02:52:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 02:52:02,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:02,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:52:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:52:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-14 02:52:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:02,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-14 02:52:02,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-14 02:52:02,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:02,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 423 [2020-10-14 02:52:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:02,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:03,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:52:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:03,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:03,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:52:03,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:03,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 02:52:03,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:03,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 129 proven. 94 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 02:52:04,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889626129] [2020-10-14 02:52:04,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:04,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:52:04,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251139902] [2020-10-14 02:52:04,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:52:04,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:04,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:52:04,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:52:04,077 INFO L87 Difference]: Start difference. First operand 39903 states and 51229 transitions. Second operand 7 states. [2020-10-14 02:52:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:38,371 INFO L93 Difference]: Finished difference Result 102180 states and 154631 transitions. [2020-10-14 02:52:38,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:52:38,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 615 [2020-10-14 02:52:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:38,652 INFO L225 Difference]: With dead ends: 102180 [2020-10-14 02:52:38,652 INFO L226 Difference]: Without dead ends: 62287 [2020-10-14 02:52:38,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:52:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62287 states. [2020-10-14 02:52:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62287 to 60272. [2020-10-14 02:52:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60272 states. [2020-10-14 02:52:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60272 states to 60272 states and 81376 transitions. [2020-10-14 02:52:40,928 INFO L78 Accepts]: Start accepts. Automaton has 60272 states and 81376 transitions. Word has length 615 [2020-10-14 02:52:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:40,929 INFO L479 AbstractCegarLoop]: Abstraction has 60272 states and 81376 transitions. [2020-10-14 02:52:40,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:52:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 60272 states and 81376 transitions. [2020-10-14 02:52:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-14 02:52:41,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:41,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:52:41,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:52:41,054 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:41,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash 427411047, now seen corresponding path program 1 times [2020-10-14 02:52:41,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:41,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274750118] [2020-10-14 02:52:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 584 [2020-10-14 02:52:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3680 [2020-10-14 02:52:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:52:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 02:52:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 425 [2020-10-14 02:52:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:44,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:44,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:44,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:44,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:44,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:52:44,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:44,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:45,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:45,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:52:45,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 02:52:45,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:45,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:52:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 02:52:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking...