/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:11:13,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:11:13,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:11:13,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:11:13,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:11:13,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:11:13,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:11:13,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:11:13,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:11:13,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:11:13,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:11:13,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:11:13,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:11:13,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:11:13,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:11:13,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:11:13,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:11:13,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:11:13,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:11:13,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:11:13,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:11:13,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:11:13,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:11:13,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:11:13,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:11:13,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:11:13,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:11:13,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:11:13,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:11:13,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:11:13,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:11:13,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:11:13,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:11:13,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:11:13,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:11:13,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:11:13,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:11:13,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:11:13,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:11:13,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:11:13,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:11:13,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:11:13,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:11:13,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:11:13,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:11:13,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:11:13,848 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:11:13,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:11:13,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:11:13,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:11:13,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:11:13,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:11:13,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:11:13,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:11:13,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:11:13,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:11:13,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:11:13,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:11:13,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:11:13,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:11:13,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:11:13,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:11:13,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:11:13,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:11:13,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:11:13,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:11:13,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:11:13,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:11:13,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:11:13,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:11:13,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:11:13,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:11:14,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:11:14,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:11:14,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:11:14,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:11:14,293 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:11:14,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-28 13:11:14,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0de698cf/0a671a5c93004d80a39fff9a931db89c/FLAGd91dcece8 [2020-10-28 13:11:15,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:11:15,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-28 13:11:15,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0de698cf/0a671a5c93004d80a39fff9a931db89c/FLAGd91dcece8 [2020-10-28 13:11:16,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0de698cf/0a671a5c93004d80a39fff9a931db89c [2020-10-28 13:11:16,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:11:16,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:11:16,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:16,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:11:16,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:11:16,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:16" (1/1) ... [2020-10-28 13:11:16,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:16, skipping insertion in model container [2020-10-28 13:11:16,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:16" (1/1) ... [2020-10-28 13:11:16,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:11:16,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:11:17,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:17,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:11:17,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:17,533 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:11:17,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17 WrapperNode [2020-10-28 13:11:17,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:17,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:11:17,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:11:17,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:11:17,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... [2020-10-28 13:11:17,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... [2020-10-28 13:11:17,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... [2020-10-28 13:11:17,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... [2020-10-28 13:11:17,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... [2020-10-28 13:11:17,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... [2020-10-28 13:11:17,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... [2020-10-28 13:11:17,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:11:17,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:11:17,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:11:17,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:11:17,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:11:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:11:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:11:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:11:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:11:17,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:11:17,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:11:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:11:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:11:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:11:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:11:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:11:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:11:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:11:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:11:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:11:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:11:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:11:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:11:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:11:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:11:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:11:21,663 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:11:21,663 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:11:21,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:21 BoogieIcfgContainer [2020-10-28 13:11:21,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:11:21,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:11:21,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:11:21,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:11:21,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:11:16" (1/3) ... [2020-10-28 13:11:21,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16537be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:21, skipping insertion in model container [2020-10-28 13:11:21,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:17" (2/3) ... [2020-10-28 13:11:21,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16537be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:21, skipping insertion in model container [2020-10-28 13:11:21,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:21" (3/3) ... [2020-10-28 13:11:21,686 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label48.c [2020-10-28 13:11:21,702 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:11:21,710 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:11:21,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:11:21,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:11:21,787 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:11:21,787 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:11:21,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:11:21,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:11:21,788 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:11:21,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:11:21,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:11:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:11:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 13:11:21,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:21,856 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] [2020-10-28 13:11:21,857 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:21,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1195536441, now seen corresponding path program 1 times [2020-10-28 13:11:21,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:21,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990347537] [2020-10-28 13:11:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:22,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:22,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:22,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 13:11:22,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-28 13:11:22,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:22,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 13:11:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:11:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:22,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:22,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:22,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:11:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:22,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:22,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990347537] [2020-10-28 13:11:22,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:22,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:11:22,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084885425] [2020-10-28 13:11:22,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:11:22,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:23,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:11:23,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:11:23,013 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-28 13:11:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:31,813 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-28 13:11:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:11:31,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-28 13:11:31,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:31,845 INFO L225 Difference]: With dead ends: 1522 [2020-10-28 13:11:31,845 INFO L226 Difference]: Without dead ends: 1011 [2020-10-28 13:11:31,859 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 [2020-10-28 13:11:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-28 13:11:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-28 13:11:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-28 13:11:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1379 transitions. [2020-10-28 13:11:32,025 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1379 transitions. Word has length 34 [2020-10-28 13:11:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:32,027 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1379 transitions. [2020-10-28 13:11:32,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:11:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1379 transitions. [2020-10-28 13:11:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 13:11:32,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:32,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:32,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:11:32,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash 203329422, now seen corresponding path program 1 times [2020-10-28 13:11:32,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:32,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868814735] [2020-10-28 13:11:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:34,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:34,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 13:11:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-28 13:11:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:34,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:11:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:34,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:34,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:34,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:11:34,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:34,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:34,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:11:34,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:34,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:11:34,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:11:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:34,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:11:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:34,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868814735] [2020-10-28 13:11:34,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:34,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:11:34,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691235924] [2020-10-28 13:11:34,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:34,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:34,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:34,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:34,759 INFO L87 Difference]: Start difference. First operand 1001 states and 1379 transitions. Second operand 7 states. [2020-10-28 13:11:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:44,221 INFO L93 Difference]: Finished difference Result 2336 states and 3158 transitions. [2020-10-28 13:11:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:11:44,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-28 13:11:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:44,233 INFO L225 Difference]: With dead ends: 2336 [2020-10-28 13:11:44,233 INFO L226 Difference]: Without dead ends: 1341 [2020-10-28 13:11:44,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:11:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-10-28 13:11:44,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1324. [2020-10-28 13:11:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-28 13:11:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1734 transitions. [2020-10-28 13:11:44,330 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1734 transitions. Word has length 103 [2020-10-28 13:11:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:44,330 INFO L481 AbstractCegarLoop]: Abstraction has 1324 states and 1734 transitions. [2020-10-28 13:11:44,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:11:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1734 transitions. [2020-10-28 13:11:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 13:11:44,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:44,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:44,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:11:44,341 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:44,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2020116022, now seen corresponding path program 1 times [2020-10-28 13:11:44,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:44,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29121669] [2020-10-28 13:11:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 13:11:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-28 13:11:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:45,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:11:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:45,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:45,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:11:45,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:45,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:45,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:45,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:45,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:11:45,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:45,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:11:45,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:45,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:11:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:45,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29121669] [2020-10-28 13:11:45,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:45,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:11:45,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605112651] [2020-10-28 13:11:45,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:45,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:45,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:45,782 INFO L87 Difference]: Start difference. First operand 1324 states and 1734 transitions. Second operand 7 states. [2020-10-28 13:11:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:57,106 INFO L93 Difference]: Finished difference Result 3010 states and 4138 transitions. [2020-10-28 13:11:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:11:57,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-28 13:11:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:57,121 INFO L225 Difference]: With dead ends: 3010 [2020-10-28 13:11:57,122 INFO L226 Difference]: Without dead ends: 1999 [2020-10-28 13:11:57,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:11:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2020-10-28 13:11:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1952. [2020-10-28 13:11:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-28 13:11:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2419 transitions. [2020-10-28 13:11:57,208 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2419 transitions. Word has length 108 [2020-10-28 13:11:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:57,209 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2419 transitions. [2020-10-28 13:11:57,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:11:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2419 transitions. [2020-10-28 13:11:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-28 13:11:57,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:57,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:11:57,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:11:57,221 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash -418987904, now seen corresponding path program 1 times [2020-10-28 13:11:57,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:57,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676095476] [2020-10-28 13:11:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:57,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:02,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:02,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 13:12:02,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:12:02,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:12:02,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:02,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:12:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 13:12:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:02,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:02,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:02,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:12:02,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:02,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:02,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:02,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:02,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:12:02,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:12:02,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:02,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:12:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:12:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:12:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:02,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:02,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:02,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:12:02,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 13:12:02,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:02,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:02,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:02,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:12:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 100 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:12:02,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676095476] [2020-10-28 13:12:02,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:02,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:12:02,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138863146] [2020-10-28 13:12:02,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:12:02,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:02,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:12:02,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:12:02,956 INFO L87 Difference]: Start difference. First operand 1952 states and 2419 transitions. Second operand 6 states. [2020-10-28 13:12:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:13,124 INFO L93 Difference]: Finished difference Result 3958 states and 5155 transitions. [2020-10-28 13:12:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:12:13,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-10-28 13:12:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:13,142 INFO L225 Difference]: With dead ends: 3958 [2020-10-28 13:12:13,143 INFO L226 Difference]: Without dead ends: 2630 [2020-10-28 13:12:13,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:12:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-10-28 13:12:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2613. [2020-10-28 13:12:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-28 13:12:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3177 transitions. [2020-10-28 13:12:13,230 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3177 transitions. Word has length 208 [2020-10-28 13:12:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:13,231 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3177 transitions. [2020-10-28 13:12:13,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:12:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3177 transitions. [2020-10-28 13:12:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 13:12:13,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:13,237 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:12:13,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:12:13,237 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:13,238 INFO L82 PathProgramCache]: Analyzing trace with hash 276701459, now seen corresponding path program 1 times [2020-10-28 13:12:13,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:13,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803098879] [2020-10-28 13:12:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:13,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:18,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:18,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:12:18,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 13:12:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 13:12:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:18,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:12:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:12:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:18,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:12:18,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:18,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:18,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:12:18,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:12:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:18,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:12:18,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:12:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:12:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 13:12:19,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:19,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:12:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:12:19,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803098879] [2020-10-28 13:12:19,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:19,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:19,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660962926] [2020-10-28 13:12:19,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:19,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:19,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:19,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:19,272 INFO L87 Difference]: Start difference. First operand 2613 states and 3177 transitions. Second operand 7 states. [2020-10-28 13:12:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:28,273 INFO L93 Difference]: Finished difference Result 6237 states and 7867 transitions. [2020-10-28 13:12:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:12:28,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-28 13:12:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:28,303 INFO L225 Difference]: With dead ends: 6237 [2020-10-28 13:12:28,303 INFO L226 Difference]: Without dead ends: 3587 [2020-10-28 13:12:28,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2020-10-28 13:12:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3235. [2020-10-28 13:12:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-10-28 13:12:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 3651 transitions. [2020-10-28 13:12:28,436 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 3651 transitions. Word has length 252 [2020-10-28 13:12:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:28,436 INFO L481 AbstractCegarLoop]: Abstraction has 3235 states and 3651 transitions. [2020-10-28 13:12:28,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 3651 transitions. [2020-10-28 13:12:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 13:12:28,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:28,443 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:12:28,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:12:28,443 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:28,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:28,444 INFO L82 PathProgramCache]: Analyzing trace with hash -73308367, now seen corresponding path program 1 times [2020-10-28 13:12:28,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:28,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946782320] [2020-10-28 13:12:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:33,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 13:12:33,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:12:33,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 13:12:33,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:33,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:12:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:33,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:33,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:33,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:12:33,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:33,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:33,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:33,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:34,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:12:34,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:34,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-28 13:12:34,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:34,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:12:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:12:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:34,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:34,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:12:34,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:34,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:12:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:34,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:12:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 52 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:12:34,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946782320] [2020-10-28 13:12:34,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:34,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:34,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071246473] [2020-10-28 13:12:34,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:34,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:34,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:34,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:34,946 INFO L87 Difference]: Start difference. First operand 3235 states and 3651 transitions. Second operand 7 states. [2020-10-28 13:12:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:46,008 INFO L93 Difference]: Finished difference Result 6236 states and 7089 transitions. [2020-10-28 13:12:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:12:46,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-28 13:12:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:46,032 INFO L225 Difference]: With dead ends: 6236 [2020-10-28 13:12:46,032 INFO L226 Difference]: Without dead ends: 3314 [2020-10-28 13:12:46,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:12:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2020-10-28 13:12:46,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3234. [2020-10-28 13:12:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-10-28 13:12:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3648 transitions. [2020-10-28 13:12:46,141 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3648 transitions. Word has length 319 [2020-10-28 13:12:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:46,141 INFO L481 AbstractCegarLoop]: Abstraction has 3234 states and 3648 transitions. [2020-10-28 13:12:46,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3648 transitions. [2020-10-28 13:12:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-28 13:12:46,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:46,150 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:12:46,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:12:46,151 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:46,154 INFO L82 PathProgramCache]: Analyzing trace with hash -504463174, now seen corresponding path program 1 times [2020-10-28 13:12:46,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:46,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980026036] [2020-10-28 13:12:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-28 13:12:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1746 [2020-10-28 13:12:48,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:48,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:12:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:12:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:48,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:12:48,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:48,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:48,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:48,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:48,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:48,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:12:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:12:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 13:12:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:48,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:12:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:12:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:12:48,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:12:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:48,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:12:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:12:49,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980026036] [2020-10-28 13:12:49,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:49,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:49,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769917658] [2020-10-28 13:12:49,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:49,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:49,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:49,224 INFO L87 Difference]: Start difference. First operand 3234 states and 3648 transitions. Second operand 7 states. [2020-10-28 13:12:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:57,048 INFO L93 Difference]: Finished difference Result 7830 states and 9111 transitions. [2020-10-28 13:12:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:12:57,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-28 13:12:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:57,075 INFO L225 Difference]: With dead ends: 7830 [2020-10-28 13:12:57,075 INFO L226 Difference]: Without dead ends: 4909 [2020-10-28 13:12:57,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2020-10-28 13:12:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4835. [2020-10-28 13:12:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4835 states. [2020-10-28 13:12:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 5435 transitions. [2020-10-28 13:12:57,216 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 5435 transitions. Word has length 393 [2020-10-28 13:12:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:57,217 INFO L481 AbstractCegarLoop]: Abstraction has 4835 states and 5435 transitions. [2020-10-28 13:12:57,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 5435 transitions. [2020-10-28 13:12:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-28 13:12:57,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:57,226 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:12:57,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:12:57,226 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:57,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:57,227 INFO L82 PathProgramCache]: Analyzing trace with hash 866949304, now seen corresponding path program 1 times [2020-10-28 13:12:57,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:57,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937801610] [2020-10-28 13:12:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:00,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-28 13:13:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-10-28 13:13:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:00,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:13:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:13:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:00,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:13:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:00,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:00,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:00,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:13:00,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:00,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-28 13:13:00,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:00,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:13:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:13:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:13:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:13:01,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937801610] [2020-10-28 13:13:01,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:01,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:01,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799898664] [2020-10-28 13:13:01,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:01,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:01,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:01,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:01,766 INFO L87 Difference]: Start difference. First operand 4835 states and 5435 transitions. Second operand 7 states. [2020-10-28 13:13:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:10,293 INFO L93 Difference]: Finished difference Result 10694 states and 12005 transitions. [2020-10-28 13:13:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:13:10,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-28 13:13:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:10,325 INFO L225 Difference]: With dead ends: 10694 [2020-10-28 13:13:10,326 INFO L226 Difference]: Without dead ends: 6172 [2020-10-28 13:13:10,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:13:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2020-10-28 13:13:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 5788. [2020-10-28 13:13:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5788 states. [2020-10-28 13:13:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5788 states to 5788 states and 6422 transitions. [2020-10-28 13:13:10,503 INFO L78 Accepts]: Start accepts. Automaton has 5788 states and 6422 transitions. Word has length 419 [2020-10-28 13:13:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:10,504 INFO L481 AbstractCegarLoop]: Abstraction has 5788 states and 6422 transitions. [2020-10-28 13:13:10,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5788 states and 6422 transitions. [2020-10-28 13:13:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-28 13:13:10,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:10,514 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:13:10,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:13:10,515 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:10,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1067169840, now seen corresponding path program 1 times [2020-10-28 13:13:10,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:10,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308756959] [2020-10-28 13:13:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:10,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:11,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:11,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-28 13:13:11,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-28 13:13:11,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:11,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:13:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 13:13:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:11,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:13:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:11,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:11,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:11,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:11,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:13:11,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:11,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:13:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:12,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:12,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:12,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:13:12,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:12,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:13:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:13:12,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308756959] [2020-10-28 13:13:12,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:12,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:13:12,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74008981] [2020-10-28 13:13:12,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:13:12,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:12,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:13:12,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:13:12,308 INFO L87 Difference]: Start difference. First operand 5788 states and 6422 transitions. Second operand 5 states. [2020-10-28 13:13:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:20,423 INFO L93 Difference]: Finished difference Result 12310 states and 14003 transitions. [2020-10-28 13:13:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:13:20,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2020-10-28 13:13:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:20,460 INFO L225 Difference]: With dead ends: 12310 [2020-10-28 13:13:20,460 INFO L226 Difference]: Without dead ends: 7768 [2020-10-28 13:13:20,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:13:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7768 states. [2020-10-28 13:13:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7768 to 7750. [2020-10-28 13:13:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7750 states. [2020-10-28 13:13:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 8799 transitions. [2020-10-28 13:13:20,759 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 8799 transitions. Word has length 431 [2020-10-28 13:13:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:20,760 INFO L481 AbstractCegarLoop]: Abstraction has 7750 states and 8799 transitions. [2020-10-28 13:13:20,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:13:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 8799 transitions. [2020-10-28 13:13:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-28 13:13:20,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:20,767 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:13:20,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:13:20,768 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1727563723, now seen corresponding path program 1 times [2020-10-28 13:13:20,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:20,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381044523] [2020-10-28 13:13:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:21,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:25,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:13:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:26,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:26,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:26,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:13:26,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:26,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:13:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:13:26,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:26,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:13:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:26,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:13:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:26,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:26,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:13:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-28 13:13:26,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:26,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:13:26,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:13:27,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381044523] [2020-10-28 13:13:27,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:27,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:27,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050021707] [2020-10-28 13:13:27,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:27,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:27,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:27,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:27,249 INFO L87 Difference]: Start difference. First operand 7750 states and 8799 transitions. Second operand 7 states. [2020-10-28 13:13:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:35,084 INFO L93 Difference]: Finished difference Result 15554 states and 17754 transitions. [2020-10-28 13:13:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:13:35,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-28 13:13:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:35,132 INFO L225 Difference]: With dead ends: 15554 [2020-10-28 13:13:35,132 INFO L226 Difference]: Without dead ends: 8430 [2020-10-28 13:13:35,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:13:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2020-10-28 13:13:35,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 8371. [2020-10-28 13:13:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8371 states. [2020-10-28 13:13:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 9438 transitions. [2020-10-28 13:13:35,349 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 9438 transitions. Word has length 471 [2020-10-28 13:13:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:35,350 INFO L481 AbstractCegarLoop]: Abstraction has 8371 states and 9438 transitions. [2020-10-28 13:13:35,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 9438 transitions. [2020-10-28 13:13:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-28 13:13:35,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:35,359 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:35,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:13:35,359 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:35,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:35,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1625891037, now seen corresponding path program 1 times [2020-10-28 13:13:35,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:35,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122450601] [2020-10-28 13:13:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-28 13:13:38,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:13:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3347 [2020-10-28 13:13:38,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:13:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:13:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:39,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:39,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:39,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:39,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:39,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:13:39,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:39,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:39,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:13:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:39,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:13:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:13:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:39,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:13:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:13:39,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122450601] [2020-10-28 13:13:39,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:39,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:39,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041614212] [2020-10-28 13:13:39,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:39,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:39,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:39,861 INFO L87 Difference]: Start difference. First operand 8371 states and 9438 transitions. Second operand 7 states. [2020-10-28 13:13:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:50,230 INFO L93 Difference]: Finished difference Result 18662 states and 21662 transitions. [2020-10-28 13:13:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:13:50,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-28 13:13:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:50,281 INFO L225 Difference]: With dead ends: 18662 [2020-10-28 13:13:50,281 INFO L226 Difference]: Without dead ends: 11537 [2020-10-28 13:13:50,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:13:50,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11537 states. [2020-10-28 13:13:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11537 to 10241. [2020-10-28 13:13:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10241 states. [2020-10-28 13:13:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10241 states to 10241 states and 11780 transitions. [2020-10-28 13:13:50,617 INFO L78 Accepts]: Start accepts. Automaton has 10241 states and 11780 transitions. Word has length 507 [2020-10-28 13:13:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:50,618 INFO L481 AbstractCegarLoop]: Abstraction has 10241 states and 11780 transitions. [2020-10-28 13:13:50,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 10241 states and 11780 transitions. [2020-10-28 13:13:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-28 13:13:50,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:50,627 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:50,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:13:50,628 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:50,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:50,629 INFO L82 PathProgramCache]: Analyzing trace with hash -193789959, now seen corresponding path program 1 times [2020-10-28 13:13:50,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:50,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141094875] [2020-10-28 13:13:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:53,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:53,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-28 13:13:53,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:13:53,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3032 [2020-10-28 13:13:53,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:53,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:13:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:13:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:13:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:54,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:54,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:54,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:54,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:13:54,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:54,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:54,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:54,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:54,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:54,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:54,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:13:54,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:54,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:54,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:54,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:54,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:13:54,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:54,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:13:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:13:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:13:54,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 234 proven. 27 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:13:55,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141094875] [2020-10-28 13:13:55,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:55,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:13:55,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982888881] [2020-10-28 13:13:55,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:13:55,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:55,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:13:55,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:13:55,119 INFO L87 Difference]: Start difference. First operand 10241 states and 11780 transitions. Second operand 6 states. [2020-10-28 13:14:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:03,312 INFO L93 Difference]: Finished difference Result 24113 states and 29564 transitions. [2020-10-28 13:14:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:14:03,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 524 [2020-10-28 13:14:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:03,378 INFO L225 Difference]: With dead ends: 24113 [2020-10-28 13:14:03,378 INFO L226 Difference]: Without dead ends: 14167 [2020-10-28 13:14:03,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:14:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14167 states. [2020-10-28 13:14:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14167 to 13999. [2020-10-28 13:14:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13999 states. [2020-10-28 13:14:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 15905 transitions. [2020-10-28 13:14:03,739 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 15905 transitions. Word has length 524 [2020-10-28 13:14:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:03,740 INFO L481 AbstractCegarLoop]: Abstraction has 13999 states and 15905 transitions. [2020-10-28 13:14:03,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:14:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 15905 transitions. [2020-10-28 13:14:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-28 13:14:03,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:03,747 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:03,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:14:03,747 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:03,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:03,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1222228794, now seen corresponding path program 1 times [2020-10-28 13:14:03,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:03,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721176355] [2020-10-28 13:14:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:04,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 13:14:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:05,020 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:14:05,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:05,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:14:05,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:05,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:05,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:05,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:05,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:05,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:05,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:05,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:14:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:14:05,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721176355] [2020-10-28 13:14:05,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:05,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:05,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191937619] [2020-10-28 13:14:05,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:05,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:05,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:05,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:05,832 INFO L87 Difference]: Start difference. First operand 13999 states and 15905 transitions. Second operand 7 states. [2020-10-28 13:14:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:15,150 INFO L93 Difference]: Finished difference Result 31795 states and 37137 transitions. [2020-10-28 13:14:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:14:15,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-28 13:14:15,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:15,224 INFO L225 Difference]: With dead ends: 31795 [2020-10-28 13:14:15,224 INFO L226 Difference]: Without dead ends: 18109 [2020-10-28 13:14:15,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:14:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18109 states. [2020-10-28 13:14:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18109 to 18071. [2020-10-28 13:14:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18071 states. [2020-10-28 13:14:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18071 states to 18071 states and 20440 transitions. [2020-10-28 13:14:15,935 INFO L78 Accepts]: Start accepts. Automaton has 18071 states and 20440 transitions. Word has length 537 [2020-10-28 13:14:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:15,937 INFO L481 AbstractCegarLoop]: Abstraction has 18071 states and 20440 transitions. [2020-10-28 13:14:15,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18071 states and 20440 transitions. [2020-10-28 13:14:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-28 13:14:15,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:15,948 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:15,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:14:15,948 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:15,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1268871660, now seen corresponding path program 1 times [2020-10-28 13:14:15,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:15,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631345531] [2020-10-28 13:14:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 560 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 13:14:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:21,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:21,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:21,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:14:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:21,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:21,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:21,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 13:14:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-28 13:14:22,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631345531] [2020-10-28 13:14:22,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:22,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:14:22,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066768915] [2020-10-28 13:14:22,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:14:22,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:22,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:14:22,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:14:22,104 INFO L87 Difference]: Start difference. First operand 18071 states and 20440 transitions. Second operand 5 states. [2020-10-28 13:14:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:31,837 INFO L93 Difference]: Finished difference Result 43903 states and 50741 transitions. [2020-10-28 13:14:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:14:31,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 580 [2020-10-28 13:14:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:31,941 INFO L225 Difference]: With dead ends: 43903 [2020-10-28 13:14:31,941 INFO L226 Difference]: Without dead ends: 27388 [2020-10-28 13:14:31,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27388 states. [2020-10-28 13:14:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27388 to 26735. [2020-10-28 13:14:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26735 states. [2020-10-28 13:14:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26735 states to 26735 states and 30774 transitions. [2020-10-28 13:14:32,557 INFO L78 Accepts]: Start accepts. Automaton has 26735 states and 30774 transitions. Word has length 580 [2020-10-28 13:14:32,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:32,558 INFO L481 AbstractCegarLoop]: Abstraction has 26735 states and 30774 transitions. [2020-10-28 13:14:32,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:14:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 26735 states and 30774 transitions. [2020-10-28 13:14:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-28 13:14:32,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:32,568 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:32,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:14:32,569 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1036013746, now seen corresponding path program 1 times [2020-10-28 13:14:32,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:32,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169415967] [2020-10-28 13:14:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:33,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:33,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 625 [2020-10-28 13:14:33,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-28 13:14:33,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:33,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:14:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:14:33,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:34,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:34,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:14:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:34,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:34,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:34,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:34,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:14:34,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:14:34,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:34,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:14:34,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:14:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:34,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:34,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:14:34,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:14:34,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:34,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:34,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:34,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 13:14:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 13:14:35,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169415967] [2020-10-28 13:14:35,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:35,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:35,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328438019] [2020-10-28 13:14:35,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:35,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:35,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:35,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:35,063 INFO L87 Difference]: Start difference. First operand 26735 states and 30774 transitions. Second operand 7 states. [2020-10-28 13:14:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:43,795 INFO L93 Difference]: Finished difference Result 58446 states and 68605 transitions. [2020-10-28 13:14:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:14:43,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 609 [2020-10-28 13:14:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:43,923 INFO L225 Difference]: With dead ends: 58446 [2020-10-28 13:14:43,923 INFO L226 Difference]: Without dead ends: 32024 [2020-10-28 13:14:43,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:14:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32024 states. [2020-10-28 13:14:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32024 to 30792. [2020-10-28 13:14:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30792 states. [2020-10-28 13:14:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30792 states to 30792 states and 35027 transitions. [2020-10-28 13:14:44,704 INFO L78 Accepts]: Start accepts. Automaton has 30792 states and 35027 transitions. Word has length 609 [2020-10-28 13:14:44,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:44,705 INFO L481 AbstractCegarLoop]: Abstraction has 30792 states and 35027 transitions. [2020-10-28 13:14:44,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 30792 states and 35027 transitions. [2020-10-28 13:14:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-10-28 13:14:44,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:44,716 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:44,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:14:44,716 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:44,717 INFO L82 PathProgramCache]: Analyzing trace with hash -350918160, now seen corresponding path program 1 times [2020-10-28 13:14:44,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:44,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381386061] [2020-10-28 13:14:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 683 [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 647 [2020-10-28 13:14:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 13:14:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:50,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:50,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:50,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:50,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:14:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:50,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:50,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:50,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:14:50,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:50,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:50,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:50,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:50,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 13:14:50,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:14:50,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:50,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-28 13:14:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:50,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 13:14:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2020-10-28 13:14:50,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381386061] [2020-10-28 13:14:50,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:50,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:14:50,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399632669] [2020-10-28 13:14:50,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:14:50,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:50,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:14:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:14:50,846 INFO L87 Difference]: Start difference. First operand 30792 states and 35027 transitions. Second operand 5 states.