/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:17:10,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:17:10,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:17:10,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:17:10,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:17:10,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:17:10,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:17:10,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:17:10,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:17:10,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:17:10,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:17:10,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:17:10,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:17:10,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:17:10,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:17:10,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:17:10,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:17:10,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:17:10,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:17:10,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:17:10,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:17:10,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:17:10,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:17:10,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:17:10,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:17:10,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:17:10,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:17:10,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:17:10,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:17:10,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:17:10,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:17:10,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:17:10,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:17:10,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:17:10,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:17:10,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:17:10,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:17:10,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:17:10,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:17:10,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:17:10,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:17:10,955 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 [2020-10-28 12:17:11,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:17:11,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:17:11,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:17:11,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:17:11,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:17:11,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:17:11,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:17:11,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:17:11,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:17:11,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:17:11,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:17:11,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:17:11,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:17:11,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:17:11,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:17:11,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:17:11,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:17:11,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:17:11,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:17:11,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:17:11,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:17:11,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:17:11,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:17:11,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:17:11,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:17:11,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:17:11,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:17:11,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:17:11,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:17:11,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:17:11,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:17:11,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:17:11,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:17:11,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:17:11,577 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:17:11,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2020-10-28 12:17:11,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20acff82b/267c6b703bd34e73aa63fc8af819cc1a/FLAGf3377c1d3 [2020-10-28 12:17:12,723 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:17:12,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2020-10-28 12:17:12,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20acff82b/267c6b703bd34e73aa63fc8af819cc1a/FLAGf3377c1d3 [2020-10-28 12:17:13,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20acff82b/267c6b703bd34e73aa63fc8af819cc1a [2020-10-28 12:17:13,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:17:13,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:17:13,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:17:13,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:17:13,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:17:13,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:17:13" (1/1) ... [2020-10-28 12:17:13,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6f9e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:13, skipping insertion in model container [2020-10-28 12:17:13,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:17:13" (1/1) ... [2020-10-28 12:17:13,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:17:13,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:17:14,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:17:14,919 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:17:15,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:17:15,716 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:17:15,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15 WrapperNode [2020-10-28 12:17:15,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:17:15,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:17:15,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:17:15,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:17:15,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (1/1) ... [2020-10-28 12:17:15,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (1/1) ... [2020-10-28 12:17:15,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (1/1) ... [2020-10-28 12:17:15,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (1/1) ... [2020-10-28 12:17:15,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (1/1) ... [2020-10-28 12:17:16,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (1/1) ... [2020-10-28 12:17:16,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (1/1) ... [2020-10-28 12:17:16,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:17:16,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:17:16,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:17:16,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:17:16,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (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 [2020-10-28 12:17:16,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:17:16,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:17:16,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:17:16,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:17:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:17:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:17:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:17:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:17:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:17:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:17:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:17:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:17:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:17:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:17:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:17:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:17:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:17:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:17:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:17:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:17:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:17:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:17:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:17:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:17:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:17:21,748 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:17:21,748 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:17:21,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:21 BoogieIcfgContainer [2020-10-28 12:17:21,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:17:21,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:17:21,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:17:21,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:17:21,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:17:13" (1/3) ... [2020-10-28 12:17:21,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419b41f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:21, skipping insertion in model container [2020-10-28 12:17:21,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:15" (2/3) ... [2020-10-28 12:17:21,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419b41f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:21, skipping insertion in model container [2020-10-28 12:17:21,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:21" (3/3) ... [2020-10-28 12:17:21,766 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2020-10-28 12:17:21,783 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:17:21,790 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:17:21,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:17:21,853 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:17:21,853 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:17:21,853 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:17:21,854 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:17:21,854 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:17:21,854 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:17:21,854 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:17:21,854 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:17:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:17:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 12:17:21,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:21,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:21,910 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:21,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:21,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1921821756, now seen corresponding path program 1 times [2020-10-28 12:17:21,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:21,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807540271] [2020-10-28 12:17:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:22,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:22,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 12:17:22,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-28 12:17:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:22,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 12:17:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:17:22,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:17:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:22,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807540271] [2020-10-28 12:17:22,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:22,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:17:22,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160908723] [2020-10-28 12:17:22,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:17:22,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:22,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:17:22,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:17:22,951 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:17:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:34,426 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:17:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:34,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 12:17:34,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:34,474 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:17:34,474 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:17:34,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:17:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:17:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:17:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-28 12:17:34,688 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 19 [2020-10-28 12:17:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:34,689 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-28 12:17:34,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:17:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-28 12:17:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 12:17:34,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:34,695 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:17:34,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:17:34,696 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:34,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1044444113, now seen corresponding path program 1 times [2020-10-28 12:17:34,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:34,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580969183] [2020-10-28 12:17:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:35,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 12:17:35,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:17:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-28 12:17:35,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:35,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:35,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:35,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:17:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:36,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:36,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:17:36,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:36,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:17:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:17:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:36,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580969183] [2020-10-28 12:17:36,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:36,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:17:36,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202336602] [2020-10-28 12:17:36,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:36,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:36,382 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-28 12:17:51,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:51,109 INFO L93 Difference]: Finished difference Result 4755 states and 8344 transitions. [2020-10-28 12:17:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:17:51,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-28 12:17:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:51,147 INFO L225 Difference]: With dead ends: 4755 [2020-10-28 12:17:51,148 INFO L226 Difference]: Without dead ends: 3207 [2020-10-28 12:17:51,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:17:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2020-10-28 12:17:51,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 3120. [2020-10-28 12:17:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-28 12:17:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4910 transitions. [2020-10-28 12:17:51,291 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4910 transitions. Word has length 88 [2020-10-28 12:17:51,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:51,292 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 4910 transitions. [2020-10-28 12:17:51,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4910 transitions. [2020-10-28 12:17:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 12:17:51,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:51,300 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:17:51,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:17:51,305 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:51,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1909801181, now seen corresponding path program 1 times [2020-10-28 12:17:51,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:51,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554273814] [2020-10-28 12:17:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:51,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:17:52,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:17:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-28 12:17:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:52,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:17:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 12:17:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:17:52,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:52,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:52,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:17:52,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:52,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:52,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:52,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:17:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:17:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:52,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:17:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:52,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554273814] [2020-10-28 12:17:52,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:52,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:17:52,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619889748] [2020-10-28 12:17:52,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:17:52,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:52,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:17:52,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:52,469 INFO L87 Difference]: Start difference. First operand 3120 states and 4910 transitions. Second operand 5 states. [2020-10-28 12:18:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:05,030 INFO L93 Difference]: Finished difference Result 9382 states and 14965 transitions. [2020-10-28 12:18:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:18:05,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-28 12:18:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:05,071 INFO L225 Difference]: With dead ends: 9382 [2020-10-28 12:18:05,071 INFO L226 Difference]: Without dead ends: 6268 [2020-10-28 12:18:05,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:18:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2020-10-28 12:18:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 6248. [2020-10-28 12:18:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6248 states. [2020-10-28 12:18:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 8772 transitions. [2020-10-28 12:18:05,268 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 8772 transitions. Word has length 94 [2020-10-28 12:18:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:05,269 INFO L481 AbstractCegarLoop]: Abstraction has 6248 states and 8772 transitions. [2020-10-28 12:18:05,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:18:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 8772 transitions. [2020-10-28 12:18:05,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 12:18:05,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:05,273 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:18:05,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:18:05,273 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:05,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1864096019, now seen corresponding path program 1 times [2020-10-28 12:18:05,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:05,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888588646] [2020-10-28 12:18:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:06,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:06,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 12:18:06,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-28 12:18:06,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:06,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:18:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:06,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:06,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:06,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:06,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:18:06,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:06,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:06,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:07,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:07,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:18:07,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 12:18:07,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:07,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:18:07,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:07,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888588646] [2020-10-28 12:18:07,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:07,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:18:07,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386785062] [2020-10-28 12:18:07,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:18:07,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:07,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:18:07,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:18:07,423 INFO L87 Difference]: Start difference. First operand 6248 states and 8772 transitions. Second operand 8 states. [2020-10-28 12:18:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:30,219 INFO L93 Difference]: Finished difference Result 25403 states and 37621 transitions. [2020-10-28 12:18:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:18:30,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-28 12:18:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:30,359 INFO L225 Difference]: With dead ends: 25403 [2020-10-28 12:18:30,360 INFO L226 Difference]: Without dead ends: 19161 [2020-10-28 12:18:30,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:18:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19161 states. [2020-10-28 12:18:30,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19161 to 19120. [2020-10-28 12:18:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19120 states. [2020-10-28 12:18:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19120 states to 19120 states and 26278 transitions. [2020-10-28 12:18:31,050 INFO L78 Accepts]: Start accepts. Automaton has 19120 states and 26278 transitions. Word has length 139 [2020-10-28 12:18:31,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:31,053 INFO L481 AbstractCegarLoop]: Abstraction has 19120 states and 26278 transitions. [2020-10-28 12:18:31,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:18:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 19120 states and 26278 transitions. [2020-10-28 12:18:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 12:18:31,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:31,063 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:31,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:18:31,063 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash 269653782, now seen corresponding path program 1 times [2020-10-28 12:18:31,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:31,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564623765] [2020-10-28 12:18:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:32,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-28 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:33,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:33,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:33,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:33,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:18:33,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:33,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:33,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:33,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:18:33,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:33,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:18:33,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:33,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:18:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:18:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:33,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:33,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:18:33,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 12:18:33,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:33,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:18:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:18:33,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564623765] [2020-10-28 12:18:33,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:33,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:18:33,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878820061] [2020-10-28 12:18:33,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:33,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:33,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:33,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:33,778 INFO L87 Difference]: Start difference. First operand 19120 states and 26278 transitions. Second operand 7 states. [2020-10-28 12:18:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:59,059 INFO L93 Difference]: Finished difference Result 53224 states and 79892 transitions. [2020-10-28 12:18:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:18:59,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-28 12:18:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:59,245 INFO L225 Difference]: With dead ends: 53224 [2020-10-28 12:18:59,245 INFO L226 Difference]: Without dead ends: 30150 [2020-10-28 12:18:59,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:18:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30150 states. [2020-10-28 12:19:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30150 to 29769. [2020-10-28 12:19:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29769 states. [2020-10-28 12:19:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29769 states to 29769 states and 38699 transitions. [2020-10-28 12:19:00,469 INFO L78 Accepts]: Start accepts. Automaton has 29769 states and 38699 transitions. Word has length 218 [2020-10-28 12:19:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:00,469 INFO L481 AbstractCegarLoop]: Abstraction has 29769 states and 38699 transitions. [2020-10-28 12:19:00,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 29769 states and 38699 transitions. [2020-10-28 12:19:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-28 12:19:00,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:00,477 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:00,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:19:00,477 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1520957984, now seen corresponding path program 1 times [2020-10-28 12:19:00,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:00,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476472572] [2020-10-28 12:19:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:02,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:02,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-28 12:19:02,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2024 [2020-10-28 12:19:02,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:02,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:19:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:19:02,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:02,819 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:19:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:02,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:02,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:02,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:02,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:19:02,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:02,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:03,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:19:03,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 12:19:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:03,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:19:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:03,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:19:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:03,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:03,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 12:19:03,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 12:19:03,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:03,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:19:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:19:03,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476472572] [2020-10-28 12:19:03,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:03,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:19:03,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995419220] [2020-10-28 12:19:03,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:19:03,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:19:03,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:19:03,660 INFO L87 Difference]: Start difference. First operand 29769 states and 38699 transitions. Second operand 8 states. [2020-10-28 12:19:03,810 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:19:04,888 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:19:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:33,039 INFO L93 Difference]: Finished difference Result 73825 states and 99703 transitions. [2020-10-28 12:19:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:19:33,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-10-28 12:19:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:33,251 INFO L225 Difference]: With dead ends: 73825 [2020-10-28 12:19:33,252 INFO L226 Difference]: Without dead ends: 44829 [2020-10-28 12:19:33,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:19:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44829 states. [2020-10-28 12:19:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44829 to 43842. [2020-10-28 12:19:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43842 states. [2020-10-28 12:19:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43842 states to 43842 states and 58147 transitions. [2020-10-28 12:19:35,279 INFO L78 Accepts]: Start accepts. Automaton has 43842 states and 58147 transitions. Word has length 279 [2020-10-28 12:19:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:35,280 INFO L481 AbstractCegarLoop]: Abstraction has 43842 states and 58147 transitions. [2020-10-28 12:19:35,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:19:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 43842 states and 58147 transitions. [2020-10-28 12:19:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-28 12:19:35,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:35,289 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:19:35,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:19:35,290 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:35,291 INFO L82 PathProgramCache]: Analyzing trace with hash -916699930, now seen corresponding path program 1 times [2020-10-28 12:19:35,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:35,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785085285] [2020-10-28 12:19:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:39,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:39,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 12:19:39,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:19:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-10-28 12:19:39,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:39,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:19:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 12:19:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:39,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:39,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:39,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:19:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:39,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:39,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:40,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:40,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:19:40,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:19:40,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:40,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:19:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:19:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:40,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:40,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:19:40,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 12:19:40,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:40,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:19:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 132 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:19:40,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785085285] [2020-10-28 12:19:40,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:40,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:19:40,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383156008] [2020-10-28 12:19:40,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:19:40,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:40,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:19:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:19:40,577 INFO L87 Difference]: Start difference. First operand 43842 states and 58147 transitions. Second operand 6 states. [2020-10-28 12:20:04,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:04,583 INFO L93 Difference]: Finished difference Result 107975 states and 151575 transitions. [2020-10-28 12:20:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:20:04,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 290 [2020-10-28 12:20:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:04,922 INFO L225 Difference]: With dead ends: 107975 [2020-10-28 12:20:04,922 INFO L226 Difference]: Without dead ends: 64911 [2020-10-28 12:20:05,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:20:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64911 states. [2020-10-28 12:20:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64911 to 64674. [2020-10-28 12:20:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64674 states. [2020-10-28 12:20:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64674 states to 64674 states and 88248 transitions. [2020-10-28 12:20:08,042 INFO L78 Accepts]: Start accepts. Automaton has 64674 states and 88248 transitions. Word has length 290 [2020-10-28 12:20:08,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:08,043 INFO L481 AbstractCegarLoop]: Abstraction has 64674 states and 88248 transitions. [2020-10-28 12:20:08,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:20:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 64674 states and 88248 transitions. [2020-10-28 12:20:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-28 12:20:08,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:08,052 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:08,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:20:08,052 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash -594701918, now seen corresponding path program 1 times [2020-10-28 12:20:08,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:08,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480003737] [2020-10-28 12:20:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:08,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:13,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:13,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-28 12:20:13,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:20:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 12:20:13,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:13,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:20:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:20:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:13,347 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:20:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:20:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:13,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:20:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:13,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:13,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:20:13,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 12:20:13,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:13,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:20:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:20:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:14,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:14,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:20:14,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 12:20:14,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:14,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:20:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 22 proven. 121 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:20:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480003737] [2020-10-28 12:20:14,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:14,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:20:14,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134849847] [2020-10-28 12:20:14,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:14,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:14,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:14,737 INFO L87 Difference]: Start difference. First operand 64674 states and 88248 transitions. Second operand 7 states. [2020-10-28 12:20:14,925 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 12:20:17,870 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:20:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:34,269 INFO L93 Difference]: Finished difference Result 129819 states and 178165 transitions. [2020-10-28 12:20:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:20:34,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-28 12:20:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:34,896 INFO L225 Difference]: With dead ends: 129819 [2020-10-28 12:20:34,896 INFO L226 Difference]: Without dead ends: 65155 [2020-10-28 12:20:35,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:20:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65155 states. [2020-10-28 12:20:36,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65155 to 64944. [2020-10-28 12:20:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64944 states. [2020-10-28 12:20:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64944 states to 64944 states and 88979 transitions. [2020-10-28 12:20:36,818 INFO L78 Accepts]: Start accepts. Automaton has 64944 states and 88979 transitions. Word has length 293 [2020-10-28 12:20:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:36,823 INFO L481 AbstractCegarLoop]: Abstraction has 64944 states and 88979 transitions. [2020-10-28 12:20:36,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 64944 states and 88979 transitions. [2020-10-28 12:20:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-28 12:20:36,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:36,850 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:20:36,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:20:36,850 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:36,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1246229742, now seen corresponding path program 1 times [2020-10-28 12:20:36,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:36,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038890214] [2020-10-28 12:20:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:38,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:40,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:40,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-28 12:20:40,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:20:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3885 [2020-10-28 12:20:40,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:40,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:20:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:20:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:41,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:41,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:41,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:41,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:20:41,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:41,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:20:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:41,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:41,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:20:41,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:41,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 12:20:41,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:41,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:20:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:41,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:20:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:41,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:41,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:20:41,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:20:41,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038890214] [2020-10-28 12:20:41,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:41,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:20:41,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918696376] [2020-10-28 12:20:41,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:41,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:41,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:41,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:41,785 INFO L87 Difference]: Start difference. First operand 64944 states and 88979 transitions. Second operand 7 states.