/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=SHALLOWEST --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/Problem18_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:25:08,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:25:08,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:25:08,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:25:08,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:25:08,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:25:08,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:25:08,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:25:08,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:25:08,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:25:08,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:25:08,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:25:08,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:25:08,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:25:08,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:25:08,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:25:08,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:25:08,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:25:08,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:25:08,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:25:08,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:25:08,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:25:08,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:25:08,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:25:08,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:25:08,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:25:08,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:25:08,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:25:08,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:25:08,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:25:08,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:25:08,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:25:08,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:25:08,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:25:08,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:25:08,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:25:08,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:25:08,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:25:08,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:25:08,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:25:08,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:25:08,748 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 [2020-10-27 00:25:08,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:25:08,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:25:08,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:25:08,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:25:08,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:25:08,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:25:08,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:25:08,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:25:08,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:25:08,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:25:08,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:25:08,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:25:08,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:25:08,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:25:08,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:25:08,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:25:08,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:25:08,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:25:08,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:25:08,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:25:08,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:25:08,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:25:08,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:25:08,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:25:08,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:25:08,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:25:08,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:25:08,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:25:08,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:25:08,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:25:09,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:25:09,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:25:09,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:25:09,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:25:09,163 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:25:09,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label14.c [2020-10-27 00:25:09,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f833a0955/fab0f3a01f6545a6b60cd9a5fff85b4a/FLAG67cb45095 [2020-10-27 00:25:10,339 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:25:10,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label14.c [2020-10-27 00:25:10,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f833a0955/fab0f3a01f6545a6b60cd9a5fff85b4a/FLAG67cb45095 [2020-10-27 00:25:10,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f833a0955/fab0f3a01f6545a6b60cd9a5fff85b4a [2020-10-27 00:25:10,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:25:10,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:25:10,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:25:10,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:25:10,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:25:10,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:10" (1/1) ... [2020-10-27 00:25:10,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:10, skipping insertion in model container [2020-10-27 00:25:10,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:10" (1/1) ... [2020-10-27 00:25:10,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:25:10,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:25:12,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:25:12,076 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:25:12,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:25:12,692 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:25:12,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12 WrapperNode [2020-10-27 00:25:12,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:25:12,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:25:12,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:25:12,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:25:12,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... [2020-10-27 00:25:12,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... [2020-10-27 00:25:12,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... [2020-10-27 00:25:12,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... [2020-10-27 00:25:12,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... [2020-10-27 00:25:12,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... [2020-10-27 00:25:12,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... [2020-10-27 00:25:12,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:25:12,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:25:12,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:25:12,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:25:12,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:25:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:25:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:25:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:25:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:25:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:25:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:25:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:25:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:25:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:25:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:25:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:25:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:25:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:25:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:25:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:25:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:25:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:25:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:25:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:25:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:25:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:25:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:25:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:25:16,958 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:25:16,959 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:25:16,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:16 BoogieIcfgContainer [2020-10-27 00:25:16,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:25:16,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:25:16,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:25:16,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:25:16,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:25:10" (1/3) ... [2020-10-27 00:25:16,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ae1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:16, skipping insertion in model container [2020-10-27 00:25:16,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:12" (2/3) ... [2020-10-27 00:25:16,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ae1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:16, skipping insertion in model container [2020-10-27 00:25:16,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:16" (3/3) ... [2020-10-27 00:25:16,973 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label14.c [2020-10-27 00:25:16,985 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:25:16,991 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:25:17,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:25:17,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:25:17,042 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:25:17,042 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:25:17,042 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:25:17,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:25:17,042 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:25:17,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:25:17,043 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:25:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:25:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 00:25:17,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:17,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:17,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:17,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1123354336, now seen corresponding path program 1 times [2020-10-27 00:25:17,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:17,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095671581] [2020-10-27 00:25:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:17,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:17,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 00:25:17,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:17,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-27 00:25:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:25:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:25:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:25:18,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:25:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:25:18,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095671581] [2020-10-27 00:25:18,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:25:18,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:25:18,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627677411] [2020-10-27 00:25:18,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:25:18,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:18,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:25:18,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:25:18,251 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:25:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:25:31,621 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 00:25:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:25:31,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-27 00:25:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:25:31,669 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:25:31,669 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:25:31,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:25:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:25:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:25:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:25:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3228 transitions. [2020-10-27 00:25:31,915 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3228 transitions. Word has length 57 [2020-10-27 00:25:31,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:25:31,918 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3228 transitions. [2020-10-27 00:25:31,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:25:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3228 transitions. [2020-10-27 00:25:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 00:25:31,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:31,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:31,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:25:31,936 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:31,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:31,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1371629657, now seen corresponding path program 1 times [2020-10-27 00:25:31,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:31,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979578415] [2020-10-27 00:25:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:32,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:32,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:25:32,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-27 00:25:32,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:25:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:25:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:32,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:32,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:32,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:25:32,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:32,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:25:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:32,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:32,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:25:32,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 00:25:32,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:25:32,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:25:32,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979578415] [2020-10-27 00:25:32,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:25:32,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:25:32,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650678173] [2020-10-27 00:25:32,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:25:32,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:32,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:25:32,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:25:32,824 INFO L87 Difference]: Start difference. First operand 2136 states and 3228 transitions. Second operand 7 states. [2020-10-27 00:25:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:25:44,493 INFO L93 Difference]: Finished difference Result 6477 states and 9847 transitions. [2020-10-27 00:25:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:25:44,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-27 00:25:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:25:44,520 INFO L225 Difference]: With dead ends: 6477 [2020-10-27 00:25:44,520 INFO L226 Difference]: Without dead ends: 4347 [2020-10-27 00:25:44,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:25:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2020-10-27 00:25:44,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 4311. [2020-10-27 00:25:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-10-27 00:25:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5799 transitions. [2020-10-27 00:25:44,725 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5799 transitions. Word has length 127 [2020-10-27 00:25:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:25:44,726 INFO L481 AbstractCegarLoop]: Abstraction has 4311 states and 5799 transitions. [2020-10-27 00:25:44,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:25:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5799 transitions. [2020-10-27 00:25:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 00:25:44,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:44,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:44,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:25:44,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:44,731 INFO L82 PathProgramCache]: Analyzing trace with hash -180418631, now seen corresponding path program 1 times [2020-10-27 00:25:44,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:44,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048028783] [2020-10-27 00:25:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 00:25:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-27 00:25:45,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:25:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:25:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:45,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:45,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:45,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:25:45,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:45,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:45,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:45,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:45,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:25:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:45,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:45,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:25:45,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:25:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:25:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:25:45,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048028783] [2020-10-27 00:25:45,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:25:45,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:25:45,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787321699] [2020-10-27 00:25:45,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:25:45,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:45,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:25:45,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:25:45,903 INFO L87 Difference]: Start difference. First operand 4311 states and 5799 transitions. Second operand 7 states. [2020-10-27 00:25:46,039 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:25:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:25:55,907 INFO L93 Difference]: Finished difference Result 10117 states and 13442 transitions. [2020-10-27 00:25:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:25:55,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-27 00:25:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:25:55,949 INFO L225 Difference]: With dead ends: 10117 [2020-10-27 00:25:55,949 INFO L226 Difference]: Without dead ends: 5812 [2020-10-27 00:25:55,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:25:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-27 00:25:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 5787. [2020-10-27 00:25:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5787 states. [2020-10-27 00:25:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 7459 transitions. [2020-10-27 00:25:56,188 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 7459 transitions. Word has length 154 [2020-10-27 00:25:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:25:56,189 INFO L481 AbstractCegarLoop]: Abstraction has 5787 states and 7459 transitions. [2020-10-27 00:25:56,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:25:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 7459 transitions. [2020-10-27 00:25:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 00:25:56,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:56,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:56,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:25:56,193 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:56,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:56,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1958948437, now seen corresponding path program 1 times [2020-10-27 00:25:56,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:56,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121551930] [2020-10-27 00:25:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:57,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:57,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 00:25:57,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:25:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-10-27 00:25:57,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:25:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:25:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 00:25:57,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:57,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:57,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:57,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:57,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:25:57,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:57,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:25:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:57,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:57,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:25:57,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 00:25:57,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:57,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:57,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 00:25:57,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:25:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:25:58,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121551930] [2020-10-27 00:25:58,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:25:58,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:25:58,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083924541] [2020-10-27 00:25:58,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:25:58,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:58,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:25:58,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:25:58,051 INFO L87 Difference]: Start difference. First operand 5787 states and 7459 transitions. Second operand 8 states. [2020-10-27 00:26:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:13,407 INFO L93 Difference]: Finished difference Result 14623 states and 20331 transitions. [2020-10-27 00:26:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:26:13,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-10-27 00:26:13,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:13,452 INFO L225 Difference]: With dead ends: 14623 [2020-10-27 00:26:13,453 INFO L226 Difference]: Without dead ends: 9544 [2020-10-27 00:26:13,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:26:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2020-10-27 00:26:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 9441. [2020-10-27 00:26:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9441 states. [2020-10-27 00:26:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9441 states to 9441 states and 11802 transitions. [2020-10-27 00:26:13,719 INFO L78 Accepts]: Start accepts. Automaton has 9441 states and 11802 transitions. Word has length 189 [2020-10-27 00:26:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:13,721 INFO L481 AbstractCegarLoop]: Abstraction has 9441 states and 11802 transitions. [2020-10-27 00:26:13,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:26:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 9441 states and 11802 transitions. [2020-10-27 00:26:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-27 00:26:13,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:13,728 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:26:13,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:26:13,728 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:13,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1652741000, now seen corresponding path program 1 times [2020-10-27 00:26:13,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:13,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900504964] [2020-10-27 00:26:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:15,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:15,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-27 00:26:15,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:26:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-10-27 00:26:15,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:15,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:26:15,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:15,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 345 [2020-10-27 00:26:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:16,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:16,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:16,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:16,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:16,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:16,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:26:16,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:16,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:16,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:16,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:16,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:26:16,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:16,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 00:26:16,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:16,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:26:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:26:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:16,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:16,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:26:16,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 00:26:16,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:26:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:26:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 7 proven. 94 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 00:26:17,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900504964] [2020-10-27 00:26:17,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:26:17,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:26:17,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775765771] [2020-10-27 00:26:17,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:26:17,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:17,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:26:17,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:26:17,075 INFO L87 Difference]: Start difference. First operand 9441 states and 11802 transitions. Second operand 8 states. [2020-10-27 00:26:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:37,597 INFO L93 Difference]: Finished difference Result 28390 states and 38398 transitions. [2020-10-27 00:26:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:26:37,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 340 [2020-10-27 00:26:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:37,688 INFO L225 Difference]: With dead ends: 28390 [2020-10-27 00:26:37,688 INFO L226 Difference]: Without dead ends: 21085 [2020-10-27 00:26:37,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:26:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21085 states. [2020-10-27 00:26:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21085 to 19616. [2020-10-27 00:26:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19616 states. [2020-10-27 00:26:38,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19616 states to 19616 states and 23976 transitions. [2020-10-27 00:26:38,209 INFO L78 Accepts]: Start accepts. Automaton has 19616 states and 23976 transitions. Word has length 340 [2020-10-27 00:26:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:38,210 INFO L481 AbstractCegarLoop]: Abstraction has 19616 states and 23976 transitions. [2020-10-27 00:26:38,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:26:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 19616 states and 23976 transitions. [2020-10-27 00:26:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-27 00:26:38,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:38,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:26:38,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:26:38,222 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 841864903, now seen corresponding path program 1 times [2020-10-27 00:26:38,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:38,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330455410] [2020-10-27 00:26:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:43,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:43,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-27 00:26:43,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:26:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 00:26:43,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:26:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:26:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:43,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:43,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:26:43,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:26:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:26:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:43,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:43,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:26:43,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 00:26:43,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:26:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:26:43,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:26:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:44,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:44,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:26:44,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 00:26:44,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:26:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:26:44,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:26:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:44,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:44,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:26:44,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:26:44,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:26:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:26:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:26:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:26:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 270 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:26:44,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330455410] [2020-10-27 00:26:44,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:26:44,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:26:44,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348737166] [2020-10-27 00:26:44,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:26:44,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:44,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:26:44,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:26:44,439 INFO L87 Difference]: Start difference. First operand 19616 states and 23976 transitions. Second operand 7 states. [2020-10-27 00:27:00,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:00,565 INFO L93 Difference]: Finished difference Result 45999 states and 57751 transitions. [2020-10-27 00:27:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:27:00,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 438 [2020-10-27 00:27:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:00,655 INFO L225 Difference]: With dead ends: 45999 [2020-10-27 00:27:00,656 INFO L226 Difference]: Without dead ends: 24690 [2020-10-27 00:27:00,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:27:00,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24690 states. [2020-10-27 00:27:01,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24690 to 23173. [2020-10-27 00:27:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23173 states. [2020-10-27 00:27:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23173 states to 23173 states and 26308 transitions. [2020-10-27 00:27:01,199 INFO L78 Accepts]: Start accepts. Automaton has 23173 states and 26308 transitions. Word has length 438 [2020-10-27 00:27:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:01,200 INFO L481 AbstractCegarLoop]: Abstraction has 23173 states and 26308 transitions. [2020-10-27 00:27:01,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 23173 states and 26308 transitions. [2020-10-27 00:27:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2020-10-27 00:27:01,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:01,239 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:01,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:27:01,239 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1200231172, now seen corresponding path program 1 times [2020-10-27 00:27:01,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:01,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877138248] [2020-10-27 00:27:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:06,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:06,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 904 [2020-10-27 00:27:06,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:27:06,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 00:27:06,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 00:27:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 661 [2020-10-27 00:27:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:27:06,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:27:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:08,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:08,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:27:08,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-27 00:27:08,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:27:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:27:08,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:08,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:09,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:09,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:27:09,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-27 00:27:09,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:27:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:27:09,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:09,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:27:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:27:09,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:09,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:27:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:27:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:27:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:27:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:10,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:10,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:27:10,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 00:27:10,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:27:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-27 00:27:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:10,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:10,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:10,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 00:27:10,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:27:10,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 00:27:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:10,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 763 [2020-10-27 00:27:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:10,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:10,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:27:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:27:10,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:27:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 205 proven. 449 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 00:27:12,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877138248] [2020-10-27 00:27:12,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:12,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:27:12,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182925292] [2020-10-27 00:27:12,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:27:12,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:27:12,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:27:12,031 INFO L87 Difference]: Start difference. First operand 23173 states and 26308 transitions. Second operand 10 states. [2020-10-27 00:27:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:22,439 INFO L93 Difference]: Finished difference Result 45134 states and 51585 transitions. [2020-10-27 00:27:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:27:22,441 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 882 [2020-10-27 00:27:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:22,505 INFO L225 Difference]: With dead ends: 45134 [2020-10-27 00:27:22,506 INFO L226 Difference]: Without dead ends: 23379 [2020-10-27 00:27:22,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:27:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23379 states. [2020-10-27 00:27:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23379 to 23209. [2020-10-27 00:27:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23209 states. [2020-10-27 00:27:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23209 states to 23209 states and 26382 transitions. [2020-10-27 00:27:22,937 INFO L78 Accepts]: Start accepts. Automaton has 23209 states and 26382 transitions. Word has length 882 [2020-10-27 00:27:22,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:22,939 INFO L481 AbstractCegarLoop]: Abstraction has 23209 states and 26382 transitions. [2020-10-27 00:27:22,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:27:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 23209 states and 26382 transitions. [2020-10-27 00:27:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-27 00:27:22,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:22,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:22,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:27:22,986 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:22,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:22,987 INFO L82 PathProgramCache]: Analyzing trace with hash -873232245, now seen corresponding path program 1 times [2020-10-27 00:27:22,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:22,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21193120] [2020-10-27 00:27:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:24,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-27 00:27:24,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1478 [2020-10-27 00:27:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:27:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:27:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:24,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:24,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:24,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:24,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:24,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:27:24,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:25,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:25,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:27:25,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 00:27:25,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:25,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:25,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:25,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:27:25,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:27:25,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:25,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:27:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:25,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:25,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:27:25,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:27:25,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:25,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:27:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:26,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:26,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:27:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 00:27:26,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:27:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:26,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:26,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:27:26,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:27:26,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:27:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:27:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:26,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:26,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:26,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:27:26,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:27:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:27:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:27:27,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21193120] [2020-10-27 00:27:27,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:27,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:27:27,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180837623] [2020-10-27 00:27:27,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:27,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:27,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:27,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:27,102 INFO L87 Difference]: Start difference. First operand 23209 states and 26382 transitions. Second operand 7 states. [2020-10-27 00:27:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:42,573 INFO L93 Difference]: Finished difference Result 53194 states and 62411 transitions. [2020-10-27 00:27:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:27:42,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 988 [2020-10-27 00:27:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:42,654 INFO L225 Difference]: With dead ends: 53194 [2020-10-27 00:27:42,654 INFO L226 Difference]: Without dead ends: 30694 [2020-10-27 00:27:42,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:27:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30694 states. [2020-10-27 00:27:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30694 to 29768. [2020-10-27 00:27:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29768 states. [2020-10-27 00:27:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29768 states to 29768 states and 33739 transitions. [2020-10-27 00:27:43,320 INFO L78 Accepts]: Start accepts. Automaton has 29768 states and 33739 transitions. Word has length 988 [2020-10-27 00:27:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:43,322 INFO L481 AbstractCegarLoop]: Abstraction has 29768 states and 33739 transitions. [2020-10-27 00:27:43,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 29768 states and 33739 transitions. [2020-10-27 00:27:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2020-10-27 00:27:43,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:43,338 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:43,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:27:43,339 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1478637274, now seen corresponding path program 1 times [2020-10-27 00:27:43,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:43,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860034776] [2020-10-27 00:27:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1088 [2020-10-27 00:27:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-27 00:27:48,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:27:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:27:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:48,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:48,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:27:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:49,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:49,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:27:49,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:27:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:49,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:27:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:27:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:27:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:49,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:27:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:27:49,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:49,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:27:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:49,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:49,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:49,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:27:49,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 00:27:49,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:27:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:50,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:27:50,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:27:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:27:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:50,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:27:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:50,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:50,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:27:50,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:27:50,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:27:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:27:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:50,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:50,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:27:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:27:50,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:27:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 358 proven. 75 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-27 00:27:50,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860034776] [2020-10-27 00:27:50,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:50,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:27:50,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067726158] [2020-10-27 00:27:50,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:50,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:50,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:50,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:50,877 INFO L87 Difference]: Start difference. First operand 29768 states and 33739 transitions. Second operand 7 states. [2020-10-27 00:28:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:04,637 INFO L93 Difference]: Finished difference Result 76157 states and 88501 transitions. [2020-10-27 00:28:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:28:04,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1064 [2020-10-27 00:28:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:04,766 INFO L225 Difference]: With dead ends: 76157 [2020-10-27 00:28:04,766 INFO L226 Difference]: Without dead ends: 47095 [2020-10-27 00:28:04,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:28:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47095 states. [2020-10-27 00:28:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47095 to 46323. [2020-10-27 00:28:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46323 states. [2020-10-27 00:28:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46323 states to 46323 states and 52197 transitions. [2020-10-27 00:28:05,637 INFO L78 Accepts]: Start accepts. Automaton has 46323 states and 52197 transitions. Word has length 1064 [2020-10-27 00:28:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:05,639 INFO L481 AbstractCegarLoop]: Abstraction has 46323 states and 52197 transitions. [2020-10-27 00:28:05,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 46323 states and 52197 transitions. [2020-10-27 00:28:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2020-10-27 00:28:05,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:05,656 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:05,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:28:05,657 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:05,657 INFO L82 PathProgramCache]: Analyzing trace with hash -2015049198, now seen corresponding path program 1 times [2020-10-27 00:28:05,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:05,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384142986] [2020-10-27 00:28:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:07,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:07,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1155 [2020-10-27 00:28:07,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:07,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1575 [2020-10-27 00:28:07,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:28:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:28:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:07,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:07,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:28:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:07,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:07,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:07,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:28:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:28:08,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:28:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:08,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:28:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:08,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:08,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:28:08,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:08,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:28:08,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:28:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:08,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:08,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:28:08,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:28:08,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:28:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:28:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:08,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:08,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:28:08,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:08,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:28:08,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:28:08,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:28:09,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384142986] [2020-10-27 00:28:09,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:09,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:28:09,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395394222] [2020-10-27 00:28:09,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:09,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:09,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:09,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:09,353 INFO L87 Difference]: Start difference. First operand 46323 states and 52197 transitions. Second operand 7 states. [2020-10-27 00:28:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:21,106 INFO L93 Difference]: Finished difference Result 95622 states and 108299 transitions. [2020-10-27 00:28:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:28:21,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1131 [2020-10-27 00:28:21,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:21,259 INFO L225 Difference]: With dead ends: 95622 [2020-10-27 00:28:21,259 INFO L226 Difference]: Without dead ends: 50717 [2020-10-27 00:28:21,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:28:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50717 states. [2020-10-27 00:28:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50717 to 50598. [2020-10-27 00:28:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50598 states. [2020-10-27 00:28:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50598 states to 50598 states and 57108 transitions. [2020-10-27 00:28:22,388 INFO L78 Accepts]: Start accepts. Automaton has 50598 states and 57108 transitions. Word has length 1131 [2020-10-27 00:28:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:22,390 INFO L481 AbstractCegarLoop]: Abstraction has 50598 states and 57108 transitions. [2020-10-27 00:28:22,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 50598 states and 57108 transitions. [2020-10-27 00:28:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1221 [2020-10-27 00:28:22,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:22,410 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:22,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:28:22,411 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:22,412 INFO L82 PathProgramCache]: Analyzing trace with hash 579716616, now seen corresponding path program 1 times [2020-10-27 00:28:22,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:22,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234833940] [2020-10-27 00:28:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:26,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:26,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1244 [2020-10-27 00:28:26,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:28:26,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4335 [2020-10-27 00:28:26,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:28:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-27 00:28:26,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:28:27,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:28:27,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:28:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:28:27,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:28:27,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:28:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:27,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:28:27,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:27,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:27,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:28:27,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:28:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:28:27,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:28:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:28,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:28,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:28:28,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-27 00:28:28,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:28:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 659 proven. 51 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2020-10-27 00:28:29,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234833940] [2020-10-27 00:28:29,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:29,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:28:29,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323996773] [2020-10-27 00:28:29,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:28:29,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:29,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:28:29,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:28:29,025 INFO L87 Difference]: Start difference. First operand 50598 states and 57108 transitions. Second operand 6 states. [2020-10-27 00:28:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:40,748 INFO L93 Difference]: Finished difference Result 112003 states and 129243 transitions. [2020-10-27 00:28:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:28:40,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1220 [2020-10-27 00:28:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:40,899 INFO L225 Difference]: With dead ends: 112003 [2020-10-27 00:28:40,899 INFO L226 Difference]: Without dead ends: 61957 [2020-10-27 00:28:40,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:28:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61957 states. [2020-10-27 00:28:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61957 to 61212. [2020-10-27 00:28:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61212 states. [2020-10-27 00:28:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61212 states to 61212 states and 69393 transitions. [2020-10-27 00:28:42,409 INFO L78 Accepts]: Start accepts. Automaton has 61212 states and 69393 transitions. Word has length 1220 [2020-10-27 00:28:42,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:42,411 INFO L481 AbstractCegarLoop]: Abstraction has 61212 states and 69393 transitions. [2020-10-27 00:28:42,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:28:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand 61212 states and 69393 transitions. [2020-10-27 00:28:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2020-10-27 00:28:42,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:42,438 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:42,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:28:42,439 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:42,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1934295867, now seen corresponding path program 1 times [2020-10-27 00:28:42,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:42,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729370961] [2020-10-27 00:28:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking...